72154145140 has 48 divisors (see below), whose sum is σ = 188912674944. Its totient is φ = 22489603200.

The previous prime is 72154145123. The next prime is 72154145183. The reversal of 72154145140 is 4154145127.

It is a junction number, because it is equal to n+sod(n) for n = 72154145096 and 72154145105.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 23425131 + ... + 23428210.

It is an arithmetic number, because the mean of its divisors is an integer number (3935680728).

Almost surely, 2^72154145140 is an apocalyptic number.

72154145140 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

72154145140 is an abundant number, since it is smaller than the sum of its proper divisors (116758529804).

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

72154145140 is a wasteful number, since it uses less digits than its factorization.

72154145140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46853368 (or 46853366 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 34.

The spelling of 72154145140 in words is "seventy-two billion, one hundred fifty-four million, one hundred forty-five thousand, one hundred forty".