72729681639360 has 224 divisors, whose sum is σ = 243437280878592. Its totient is φ = 18369610383360.

The previous prime is 72729681639353. The next prime is 72729681639379. The reversal of 72729681639360 is 6393618692727.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24599937 + ... + 27397376.

Almost surely, 2^{72729681639360} is an apocalyptic number.

It is an amenable number.

72729681639360 is an abundant number, since it is smaller than the sum of its proper divisors (170707599239232).

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

72729681639360 is a wasteful number, since it uses less digits than its factorization.

72729681639360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51997411 (or 51997401 counting only the distinct ones).

The product of its (nonzero) digits is 246903552, while the sum is 69.

The spelling of 72729681639360 in words is "seventy-two trillion, seven hundred twenty-nine billion, six hundred eighty-one million, six hundred thirty-nine thousand, three hundred sixty".