72115061251251 has 32 divisors (see below), whose sum is σ = 97871505596928. Its totient is φ = 47223128736000.

The previous prime is 72115061251249. The next prime is 72115061251297. The reversal of 72115061251251 is 15215216051127.

It is not a de Polignac number, because 72115061251251 - 2¹ = 72115061251249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72115061251151) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 448851505 + ... + 449012141.

It is an arithmetic number, because the mean of its divisors is an integer number (3058484549904).

Almost surely, 2^{72115061251251} is an apocalyptic number.

72115061251251 is a deficient number, since it is larger than the sum of its proper divisors (25756444345677).

72115061251251 is a wasteful number, since it uses less digits than its factorization.

72115061251251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169131.

The product of its (nonzero) digits is 42000, while the sum is 39.

The spelling of 72115061251251 in words is "seventy-two trillion, one hundred fifteen billion, sixty-one million, two hundred fifty-one thousand, two hundred fifty-one".