74649995845 has 16 divisors (see below), whose sum is σ = 91674424512. Its totient is φ = 58324049280.

The previous prime is 74649995807. The next prime is 74649995879. The reversal of 74649995845 is 54859994647.

It is a happy number.

It is not a de Polignac number, because 74649995845 - 2¹³ = 74649987653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2377569 + ... + 2408761.

It is an arithmetic number, because the mean of its divisors is an integer number (5729651532).

Almost surely, 2^74649995845 is an apocalyptic number.

It is an amenable number.

74649995845 is a deficient number, since it is larger than the sum of its proper divisors (17024428667).

74649995845 is a wasteful number, since it uses less digits than its factorization.

74649995845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42372.

The product of its digits is 391910400, while the sum is 70.

The spelling of 74649995845 in words is "seventy-four billion, six hundred forty-nine million, nine hundred ninety-five thousand, eight hundred forty-five".