72561680234 has 8 divisors (see below), whose sum is σ = 108931959108. Its totient is φ = 36251027200.

The previous prime is 72561680207. The next prime is 72561680281. The reversal of 72561680234 is 43208616527.

It can be written as a sum of positive squares in 2 ways, for example, as 62351588209 + 10210092025 = 249703^2 + 101045^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14903417 + ... + 14908284.

Almost surely, 2^72561680234 is an apocalyptic number.

72561680234 is a deficient number, since it is larger than the sum of its proper divisors (36370278874).

72561680234 is a wasteful number, since it uses less digits than its factorization.

72561680234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29812920.

The product of its (nonzero) digits is 483840, while the sum is 44.

The spelling of 72561680234 in words is "seventy-two billion, five hundred sixty-one million, six hundred eighty thousand, two hundred thirty-four".