72550475255644 has 12 divisors (see below), whose sum is σ = 126964466112904. Its totient is φ = 36274913509104.

The previous prime is 72550475255641. The next prime is 72550475255719. The reversal of 72550475255644 is 44655257405527.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72550475255641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80525694 + ... + 81421669.

Almost surely, 2^{72550475255644} is an apocalyptic number.

It is an amenable number.

72550475255644 is a deficient number, since it is larger than the sum of its proper divisors (54413990857260).

72550475255644 is a wasteful number, since it uses less digits than its factorization.

72550475255644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162059364 (or 162059362 counting only the distinct ones).

The product of its (nonzero) digits is 235200000, while the sum is 61.

The spelling of 72550475255644 in words is "seventy-two trillion, five hundred fifty billion, four hundred seventy-five million, two hundred fifty-five thousand, six hundred forty-four".