121479545538 has 48 divisors (see below), whose sum is σ = 285960762360. Its totient is φ = 37047532032.

The previous prime is 121479545497. The next prime is 121479545549. The reversal of 121479545538 is 835545974121.

121479545538 is a `hidden beast` number, since 1 + 2 + 1 + 47 + 9 + 545 + 53 + 8 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 55858013649 + 65621531889 = 236343^2 + 256167^2 .

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2270653 + ... + 2323536.

Almost surely, 2^121479545538 is an apocalyptic number.

121479545538 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

121479545538 is an abundant number, since it is smaller than the sum of its proper divisors (164481216822).

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

121479545538 is a wasteful number, since it uses less digits than its factorization.

121479545538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4594323 (or 4594320 counting only the distinct ones).

The product of its digits is 6048000, while the sum is 54.

The spelling of 121479545538 in words is "one hundred twenty-one billion, four hundred seventy-nine million, five hundred forty-five thousand, five hundred thirty-eight".