90375767947 has 4 divisors (see below), whose sum is σ = 90378389560. Its totient is φ = 90373146336.

The previous prime is 90375767927. The next prime is 90375768001. The reversal of 90375767947 is 74976757309.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74976757309 = 61 ⋅1229127169.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90375767947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90375767917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1258398 + ... + 1328275.

It is an arithmetic number, because the mean of its divisors is an integer number (22594597390).

Almost surely, 2^90375767947 is an apocalyptic number.

90375767947 is a deficient number, since it is larger than the sum of its proper divisors (2621613).

90375767947 is a wasteful number, since it uses less digits than its factorization.

90375767947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2621612.

The product of its (nonzero) digits is 70013160, while the sum is 64.

The spelling of 90375767947 in words is "ninety billion, three hundred seventy-five million, seven hundred sixty-seven thousand, nine hundred forty-seven".