72990720001 has 4 divisors (see below), whose sum is σ = 73699367872. Its totient is φ = 72282072132.

The previous prime is 72990719981. The next prime is 72990720043. The reversal of 72990720001 is 10002709927.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10002709927 = 7 ⋅1428958561.

It is a cyclic number.

It is not a de Polignac number, because 72990720001 - 2⁵ = 72990719969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72990720601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 354323781 + ... + 354323986.

It is an arithmetic number, because the mean of its divisors is an integer number (18424841968).

Almost surely, 2^72990720001 is an apocalyptic number.

It is an amenable number.

72990720001 is a deficient number, since it is larger than the sum of its proper divisors (708647871).

72990720001 is a wasteful number, since it uses less digits than its factorization.

72990720001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708647870.

The product of its (nonzero) digits is 15876, while the sum is 37.

The spelling of 72990720001 in words is "seventy-two billion, nine hundred ninety million, seven hundred twenty thousand, one".