87761594957 has 8 divisors (see below), whose sum is σ = 88543995000. Its totient is φ = 86981773824.

The previous prime is 87761594951. The next prime is 87761594981. The reversal of 87761594957 is 75949516778.

It can be written as a sum of positive squares in 4 ways, for example, as 14977109161 + 72784485796 = 122381^2 + 269786^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87761594957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87761594951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 576332 + ... + 712517.

It is an arithmetic number, because the mean of its divisors is an integer number (11067999375).

Almost surely, 2^87761594957 is an apocalyptic number.

It is an amenable number.

87761594957 is a deficient number, since it is larger than the sum of its proper divisors (782400043).

87761594957 is a wasteful number, since it uses less digits than its factorization.

87761594957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1289455.

The product of its digits is 133358400, while the sum is 68.

The spelling of 87761594957 in words is "eighty-seven billion, seven hundred sixty-one million, five hundred ninety-four thousand, nine hundred fifty-seven".