870646137723705 has 128 divisors (see below), whose sum is σ = 1627346254381056. Its totient is φ = 389197857484800.

The previous prime is 870646137723701. The next prime is 870646137723707. The reversal of 870646137723705 is 507327731646078.

It is not a de Polignac number, because 870646137723705 - 2² = 870646137723701 is a prime.

It is not an unprimeable number, because it can be changed into a prime (870646137723701) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 29402779350 + ... + 29402808960.

It is an arithmetic number, because the mean of its divisors is an integer number (12713642612352).

Almost surely, 2^{870646137723705} is an apocalyptic number.

It is an amenable number.

870646137723705 is a deficient number, since it is larger than the sum of its proper divisors (756700116657351).

870646137723705 is a wasteful number, since it uses less digits than its factorization.

870646137723705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34727.

The product of its (nonzero) digits is 248935680, while the sum is 66.

The spelling of 870646137723705 in words is "eight hundred seventy trillion, six hundred forty-six billion, one hundred thirty-seven million, seven hundred twenty-three thousand, seven hundred five".