72774136427 has 8 divisors (see below), whose sum is σ = 74294431200. Its totient is φ = 71267600320.

The previous prime is 72774136423. The next prime is 72774136439. The reversal of 72774136427 is 72463147727.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72774136427 - 2² = 72774136423 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72774136423) 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 7 ways as a sum of consecutive naturals, for example, 3428978 + ... + 3450135.

It is an arithmetic number, because the mean of its divisors is an integer number (9286803900).

Almost surely, 2^72774136427 is an apocalyptic number.

72774136427 is a deficient number, since it is larger than the sum of its proper divisors (1520294773).

72774136427 is a wasteful number, since it uses less digits than its factorization.

72774136427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6879333.

The product of its digits is 2765952, while the sum is 50.

The spelling of 72774136427 in words is "seventy-two billion, seven hundred seventy-four million, one hundred thirty-six thousand, four hundred twenty-seven".