72421002563154 has 48 divisors (see below), whose sum is σ = 168491899765728. Its totient is φ = 20691442345728.

The previous prime is 72421002563101. The next prime is 72421002563179. The reversal of 72421002563154 is 45136520012427.

It is a happy number.

It is a super-2 number, since 2×72421002563154² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21273442 + ... + 24441794.

It is an arithmetic number, because the mean of its divisors is an integer number (3510247911786).

Almost surely, 2^{72421002563154} is an apocalyptic number.

72421002563154 is an abundant number, since it is smaller than the sum of its proper divisors (96070897202574).

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

72421002563154 is a wasteful number, since it uses less digits than its factorization.

72421002563154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3246119 (or 3246112 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 42.

The spelling of 72421002563154 in words is "seventy-two trillion, four hundred twenty-one billion, two million, five hundred sixty-three thousand, one hundred fifty-four".