72554342986690 has 64 divisors (see below), whose sum is σ = 136200544330752. Its totient is φ = 27797420851200.

The previous prime is 72554342986667. The next prime is 72554342986691. The reversal of 72554342986690 is 9668924345527.

It is a happy number.

It is a super-2 number, since 2×72554342986690² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72554342986691) 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, 9198754 + ... + 15156706.

It is an arithmetic number, because the mean of its divisors is an integer number (2128133505168).

Almost surely, 2^{72554342986690} is an apocalyptic number.

72554342986690 is a deficient number, since it is larger than the sum of its proper divisors (63646201344062).

72554342986690 is a wasteful number, since it uses less digits than its factorization.

72554342986690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5958395.

The product of its (nonzero) digits is 783820800, while the sum is 70.

The spelling of 72554342986690 in words is "seventy-two trillion, five hundred fifty-four billion, three hundred forty-two million, nine hundred eighty-six thousand, six hundred ninety".