42847157631566 has 16 divisors (see below), whose sum is σ = 64408023497088. Its totient is φ = 21377825124600.

The previous prime is 42847157631527. The next prime is 42847157631571. The reversal of 42847157631566 is 66513675174824.

It is a happy number.

It is a super-3 number, since 3×42847157631566³ (a number of 42 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7761761 + ... + 12080531.

It is an arithmetic number, because the mean of its divisors is an integer number (4025501468568).

Almost surely, 2^{42847157631566} is an apocalyptic number.

42847157631566 is a deficient number, since it is larger than the sum of its proper divisors (21560865865522).

42847157631566 is a wasteful number, since it uses less digits than its factorization.

42847157631566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4329367.

The product of its digits is 203212800, while the sum is 65.

The spelling of 42847157631566 in words is "forty-two trillion, eight hundred forty-seven billion, one hundred fifty-seven million, six hundred thirty-one thousand, five hundred sixty-six".