42847157631686 has 32 divisors (see below), whose sum is σ = 69500622938112. Its totient is φ = 19733976138880.

The previous prime is 42847157631671. The next prime is 42847157631721. The reversal of 42847157631686 is 68613675174824.

It is a super-2 number, since 2×42847157631686² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

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, 92021915 + ... + 92486361.

It is an arithmetic number, because the mean of its divisors is an integer number (2171894466816).

Almost surely, 2^{42847157631686} is an apocalyptic number.

42847157631686 is a deficient number, since it is larger than the sum of its proper divisors (26653465306426).

42847157631686 is a wasteful number, since it uses less digits than its factorization.

42847157631686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522244.

The product of its digits is 325140480, while the sum is 68.

The spelling of 42847157631686 in words is "forty-two trillion, eight hundred forty-seven billion, one hundred fifty-seven million, six hundred thirty-one thousand, six hundred eighty-six".