72663156646072 has 32 divisors (see below), whose sum is σ = 142167891480480. Its totient is φ = 34751737715200.

The previous prime is 72663156646063. The next prime is 72663156646151. The reversal of 72663156646072 is 27064665136627.

72663156646072 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 72663156646072.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32441268 + ... + 34608700.

It is an arithmetic number, because the mean of its divisors is an integer number (4442746608765).

Almost surely, 2^{72663156646072} is an apocalyptic number.

It is an amenable number.

72663156646072 is a deficient number, since it is larger than the sum of its proper divisors (69504734834408).

72663156646072 is a wasteful number, since it uses less digits than its factorization.

72663156646072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2349663 (or 2349659 counting only the distinct ones).

The product of its (nonzero) digits is 91445760, while the sum is 61.

The spelling of 72663156646072 in words is "seventy-two trillion, six hundred sixty-three billion, one hundred fifty-six million, six hundred forty-six thousand, seventy-two".