87613865012125 has 32 divisors (see below), whose sum is σ = 112346800956000. Its totient is φ = 68166674150400.

The previous prime is 87613865012119. The next prime is 87613865012137. The reversal of 87613865012125 is 52121056831678.

It is a happy number.

It can be written as a sum of positive squares in 16 ways, for example, as 61639410059929 + 25974454952196 = 7851077^2 + 5096514^2 .

It is not a de Polignac number, because 87613865012125 - 2²⁷ = 87613730794397 is a prime.

It is a super-2 number, since 2×87613865012125² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6319701 + ... + 14668549.

It is an arithmetic number, because the mean of its divisors is an integer number (3510837529875).

Almost surely, 2^{87613865012125} is an apocalyptic number.

It is an amenable number.

87613865012125 is a deficient number, since it is larger than the sum of its proper divisors (24732935943875).

87613865012125 is a wasteful number, since it uses less digits than its factorization.

87613865012125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8351170 (or 8351160 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 55.

The spelling of 87613865012125 in words is "eighty-seven trillion, six hundred thirteen billion, eight hundred sixty-five million, twelve thousand, one hundred twenty-five".