870615208120456 has 64 divisors (see below), whose sum is σ = 1704987917867520. Its totient is φ = 415987572000000.

The previous prime is 870615208120397. The next prime is 870615208120499. The reversal of 870615208120456 is 654021802516078.

It is a super-2 number, since 2×870615208120456² (a number of 31 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 870615208120397 and 870615208120406.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12569666481 + ... + 12569735743.

It is an arithmetic number, because the mean of its divisors is an integer number (26640436216680).

Almost surely, 2^{870615208120456} is an apocalyptic number.

It is an amenable number.

870615208120456 is a deficient number, since it is larger than the sum of its proper divisors (834372709747064).

870615208120456 is a wasteful number, since it uses less digits than its factorization.

870615208120456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132886 (or 132882 counting only the distinct ones).

The product of its (nonzero) digits is 6451200, while the sum is 55.

The spelling of 870615208120456 in words is "eight hundred seventy trillion, six hundred fifteen billion, two hundred eight million, one hundred twenty thousand, four hundred fifty-six".