72615403388 has 24 divisors (see below), whose sum is σ = 138960299520. Its totient is φ = 32928217520.

The previous prime is 72615403387. The next prime is 72615403411. The reversal of 72615403388 is 88330451627.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72615403387) 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, 1950956 + ... + 1987827.

It is an arithmetic number, because the mean of its divisors is an integer number (5790012480).

Almost surely, 2^72615403388 is an apocalyptic number.

It is an amenable number.

72615403388 is a deficient number, since it is larger than the sum of its proper divisors (66344896132).

72615403388 is a wasteful number, since it uses less digits than its factorization.

72615403388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3939217 (or 3939215 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 47.

The spelling of 72615403388 in words is "seventy-two billion, six hundred fifteen million, four hundred three thousand, three hundred eighty-eight".