72913203072 has 96 divisors (see below), whose sum is σ = 218937822480. Its totient is φ = 23247679488.

The previous prime is 72913203053. The next prime is 72913203101. The reversal of 72913203072 is 27030231927.

72913203072 is a `hidden beast` number, since 7 + 29 + 1 + 320 + 307 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1349433 + ... + 1402424.

Almost surely, 2^72913203072 is an apocalyptic number.

72913203072 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

72913203072 is an abundant number, since it is smaller than the sum of its proper divisors (146024619408).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72913203072 is a wasteful number, since it uses less digits than its factorization.

72913203072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2751900 (or 2751885 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 36.

Adding to 72913203072 its reverse (27030231927), we get a palindrome (99943434999).

The spelling of 72913203072 in words is "seventy-two billion, nine hundred thirteen million, two hundred three thousand, seventy-two".