76157785090 has 32 divisors (see below), whose sum is σ = 138989591280. Its totient is φ = 30039819264.

The previous prime is 76157785061. The next prime is 76157785147. The reversal of 76157785090 is 9058775167.

It is a happy number.

It is a Cunningham number, because it is equal to 275967²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 8706942721 + 67450842369 = 93311^2 + 259713^2 .

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 6146982 + ... + 6159358.

Almost surely, 2^76157785090 is an apocalyptic number.

76157785090 is a deficient number, since it is larger than the sum of its proper divisors (62831806190).

76157785090 is a wasteful number, since it uses less digits than its factorization.

76157785090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20886.

The product of its (nonzero) digits is 3704400, while the sum is 55.

The spelling of 76157785090 in words is "seventy-six billion, one hundred fifty-seven million, seven hundred eighty-five thousand, ninety".