121586490504 has 48 divisors (see below), whose sum is σ = 341492926320. Its totient is φ = 40528829520.

The previous prime is 121586490503. The next prime is 121586490521. The reversal of 121586490504 is 405094685121.

121586490504 is a `hidden beast` number, since 1 + 2 + 1 + 58 + 6 + 4 + 90 + 504 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 121586490504.

It is not an unprimeable number, because it can be changed into a prime (121586490503) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31270302 + ... + 31274189.

It is an arithmetic number, because the mean of its divisors is an integer number (7114435965).

Almost surely, 2^121586490504 is an apocalyptic number.

It is an amenable number.

121586490504 is an abundant number, since it is smaller than the sum of its proper divisors (219906435816).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121586490504 is an equidigital number, since it uses as much as digits as its factorization.

121586490504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62544512 (or 62544496 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The spelling of 121586490504 in words is "one hundred twenty-one billion, five hundred eighty-six million, four hundred ninety thousand, five hundred four".