121576087615456 has 48 divisors (see below), whose sum is σ = 239450175926640. Its totient is φ = 60763349698560.

The previous prime is 121576087615453. The next prime is 121576087615471. The reversal of 121576087615456 is 654516780675121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121576087615453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 801195400 + ... + 801347128.

It is an arithmetic number, because the mean of its divisors is an integer number (4988545331805).

Almost surely, 2^{121576087615456} is an apocalyptic number.

121576087615456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

121576087615456 is a deficient number, since it is larger than the sum of its proper divisors (117874088311184).

121576087615456 is a wasteful number, since it uses less digits than its factorization.

121576087615456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161747 (or 161739 counting only the distinct ones).

The product of its (nonzero) digits is 84672000, while the sum is 64.

The spelling of 121576087615456 in words is "one hundred twenty-one trillion, five hundred seventy-six billion, eighty-seven million, six hundred fifteen thousand, four hundred fifty-six".