870612138251506 has 96 divisors (see below), whose sum is σ = 1546633380409920. Its totient is φ = 366426876816000.

The previous prime is 870612138251467. The next prime is 870612138251549. The reversal of 870612138251506 is 605152831216078.

It is a happy number.

It is a super-2 number, since 2×870612138251506² (a number of 31 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2682581761 + ... + 2682906283.

It is an arithmetic number, because the mean of its divisors is an integer number (16110764379270).

Almost surely, 2^{870612138251506} is an apocalyptic number.

870612138251506 is a deficient number, since it is larger than the sum of its proper divisors (676021242158414).

870612138251506 is a wasteful number, since it uses less digits than its factorization.

870612138251506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326840 (or 326833 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 55.

The spelling of 870612138251506 in words is "eight hundred seventy trillion, six hundred twelve billion, one hundred thirty-eight million, two hundred fifty-one thousand, five hundred six".