87240925188555 has 16 divisors (see below), whose sum is σ = 139589595889920. Its totient is φ = 46527121571168.

The previous prime is 87240925188493. The next prime is 87240925188569. The reversal of 87240925188555 is 55588152904278.

It is a cyclic number.

It is not a de Polignac number, because 87240925188555 - 2⁶ = 87240925188491 is a prime.

It is a super-2 number, since 2×87240925188555² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 87240925188555.

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, 85215615 + ... + 86233304.

It is an arithmetic number, because the mean of its divisors is an integer number (8724349743120).

Almost surely, 2^{87240925188555} is an apocalyptic number.

87240925188555 is a deficient number, since it is larger than the sum of its proper divisors (52348670701365).

87240925188555 is a wasteful number, since it uses less digits than its factorization.

87240925188555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171482850.

The product of its (nonzero) digits is 322560000, while the sum is 69.

The spelling of 87240925188555 in words is "eighty-seven trillion, two hundred forty billion, nine hundred twenty-five million, one hundred eighty-eight thousand, five hundred fifty-five".