72870663951 has 24 divisors (see below), whose sum is σ = 110403193056. Its totient is φ = 46227456000.

The previous prime is 72870663917. The next prime is 72870663961. The reversal of 72870663951 is 15936607827.

It is not a de Polignac number, because 72870663951 - 2¹⁴ = 72870647567 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72870663961) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 872050 + ... + 951951.

It is an arithmetic number, because the mean of its divisors is an integer number (4600133044).

Almost surely, 2^72870663951 is an apocalyptic number.

72870663951 is a deficient number, since it is larger than the sum of its proper divisors (37532529105).

72870663951 is a wasteful number, since it uses less digits than its factorization.

72870663951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1824223 (or 1824220 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 54.

The spelling of 72870663951 in words is "seventy-two billion, eight hundred seventy million, six hundred sixty-three thousand, nine hundred fifty-one".