870000397651 has 12 divisors (see below), whose sum is σ = 1092893062576. Its totient is φ = 677922387120.

The previous prime is 870000397649. The next prime is 870000397697. The reversal of 870000397651 is 156793000078.

It is not a de Polignac number, because 870000397651 - 2¹ = 870000397649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (870000397601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 513576720 + ... + 513578413.

Almost surely, 2^870000397651 is an apocalyptic number.

870000397651 is a deficient number, since it is larger than the sum of its proper divisors (222892664925).

870000397651 is a wasteful number, since it uses less digits than its factorization.

870000397651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1027155162 (or 1027155151 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 46.

The spelling of 870000397651 in words is "eight hundred seventy billion, three hundred ninety-seven thousand, six hundred fifty-one".