72870663950 has 48 divisors (see below), whose sum is σ = 157214235264. Its totient is φ = 24611320800.

The previous prime is 72870663917. The next prime is 72870663961. The reversal of 72870663950 is 5936607827.

It is a junction number, because it is equal to n+sod(n) for n = 72870663892 and 72870663901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1530296 + ... + 1577195.

It is an arithmetic number, because the mean of its divisors is an integer number (3275296568).

Almost surely, 2^72870663950 is an apocalyptic number.

72870663950 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

72870663950 is an abundant number, since it is smaller than the sum of its proper divisors (84343571314).

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

72870663950 is a wasteful number, since it uses less digits than its factorization.

72870663950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3107577 (or 3107572 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 53.

The spelling of 72870663950 in words is "seventy-two billion, eight hundred seventy million, six hundred sixty-three thousand, nine hundred fifty".