15421153220451 has 96 divisors (see below), whose sum is σ = 24825943134720. Its totient is φ = 9146642496000.

The previous prime is 15421153220413. The next prime is 15421153220503. The reversal of 15421153220451 is 15402235112451.

15421153220451 is a `hidden beast` number, since 1 + 5 + 42 + 11 + 532 + 20 + 4 + 51 = 666.

It is not a de Polignac number, because 15421153220451 - 2²⁷ = 15421019002723 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15421153220951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 298874311 + ... + 298925903.

It is an arithmetic number, because the mean of its divisors is an integer number (258603574320).

Almost surely, 2^{15421153220451} is an apocalyptic number.

15421153220451 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

15421153220451 is a deficient number, since it is larger than the sum of its proper divisors (9404789914269).

15421153220451 is a wasteful number, since it uses less digits than its factorization.

15421153220451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52057 (or 52054 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

The spelling of 15421153220451 in words is "fifteen trillion, four hundred twenty-one billion, one hundred fifty-three million, two hundred twenty thousand, four hundred fifty-one".