75640325377 has 4 divisors (see below), whose sum is σ = 78929035200. Its totient is φ = 72351615556.

The previous prime is 75640325219. The next prime is 75640325381. The reversal of 75640325377 is 77352304657.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 75640325377 - 2¹¹ = 75640323329 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 75640325377.

It is not an unprimeable number, because it can be changed into a prime (75640322377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1644354877 + ... + 1644354922.

It is an arithmetic number, because the mean of its divisors is an integer number (19732258800).

Almost surely, 2^75640325377 is an apocalyptic number.

It is an amenable number.

75640325377 is a deficient number, since it is larger than the sum of its proper divisors (3288709823).

75640325377 is a wasteful number, since it uses less digits than its factorization.

75640325377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3288709822.

The product of its (nonzero) digits is 3704400, while the sum is 49.

The spelling of 75640325377 in words is "seventy-five billion, six hundred forty million, three hundred twenty-five thousand, three hundred seventy-seven".