72121056060507 has 16 divisors (see below), whose sum is σ = 96562509238272. Its totient is φ = 47880162103680.

The previous prime is 72121056060481. The next prime is 72121056060569. The reversal of 72121056060507 is 70506065012127.

It is a happy number.

It is not a de Polignac number, because 72121056060507 - 2¹¹ = 72121056058459 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72121056060587) 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, 33074118 + ... + 35187204.

It is an arithmetic number, because the mean of its divisors is an integer number (6035156827392).

Almost surely, 2^{72121056060507} is an apocalyptic number.

72121056060507 is a deficient number, since it is larger than the sum of its proper divisors (24441453177765).

72121056060507 is a wasteful number, since it uses less digits than its factorization.

72121056060507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2160538.

The product of its (nonzero) digits is 176400, while the sum is 42.

The spelling of 72121056060507 in words is "seventy-two trillion, one hundred twenty-one billion, fifty-six million, sixty thousand, five hundred seven".