72015252557501 has 8 divisors (see below), whose sum is σ = 78570387077184. Its totient is φ = 65461500267520.

The previous prime is 72015252557483. The next prime is 72015252557531. The reversal of 72015252557501 is 10575525251027.

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 72015252557501 - 2²² = 72015248363197 is a prime.

It is a super-2 number, since 2×72015252557501² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72015252557531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 345448481 + ... + 345656886.

It is an arithmetic number, because the mean of its divisors is an integer number (9821298384648).

Almost surely, 2^{72015252557501} is an apocalyptic number.

It is an amenable number.

72015252557501 is a deficient number, since it is larger than the sum of its proper divisors (6555134519683).

72015252557501 is a wasteful number, since it uses less digits than its factorization.

72015252557501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691114851.

The product of its (nonzero) digits is 1225000, while the sum is 47.

The spelling of 72015252557501 in words is "seventy-two trillion, fifteen billion, two hundred fifty-two million, five hundred fifty-seven thousand, five hundred one".