72266681612144 has 160 divisors (see below), whose sum is σ = 145438851317760. Its totient is φ = 34763990317056.

The previous prime is 72266681612143. The next prime is 72266681612149. The reversal of 72266681612144 is 44121618666227.

It is a self number, because there is not a number n which added to its sum of digits gives 72266681612144.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72266681612143) 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, 14781482852 + ... + 14781487740.

It is an arithmetic number, because the mean of its divisors is an integer number (908992820736).

Almost surely, 2^{72266681612144} is an apocalyptic number.

It is an amenable number.

72266681612144 is an abundant number, since it is smaller than the sum of its proper divisors (73172169705616).

72266681612144 is a wasteful number, since it uses less digits than its factorization.

72266681612144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6247 (or 6241 counting only the distinct ones).

The product of its digits is 9289728, while the sum is 56.

The spelling of 72266681612144 in words is "seventy-two trillion, two hundred sixty-six billion, six hundred eighty-one million, six hundred twelve thousand, one hundred forty-four".