72149204854 has 32 divisors (see below), whose sum is σ = 109344312000. Its totient is φ = 35703797760.

The previous prime is 72149204843. The next prime is 72149204857. The reversal of 72149204854 is 45840294127.

It is a super-2 number, since 2×72149204854² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72149204857) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73847214 + ... + 73848190.

It is an arithmetic number, because the mean of its divisors is an integer number (3417009750).

Almost surely, 2^72149204854 is an apocalyptic number.

72149204854 is a deficient number, since it is larger than the sum of its proper divisors (37195107146).

72149204854 is a wasteful number, since it uses less digits than its factorization.

72149204854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2008.

The product of its (nonzero) digits is 645120, while the sum is 46.

The spelling of 72149204854 in words is "seventy-two billion, one hundred forty-nine million, two hundred four thousand, eight hundred fifty-four".