42671347851556 has 12 divisors (see below), whose sum is σ = 74674913973660. Its totient is φ = 21335658144800.

The previous prime is 42671347851553. The next prime is 42671347851569. The reversal of 42671347851556 is 65515874317624.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5784188541156 + 36887159310400 = 2405034^2 + 6073480^2 .

It is a super-2 number, since 2×42671347851556² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42671347851553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3850110 + ... + 10008298.

It is an arithmetic number, because the mean of its divisors is an integer number (6222909497805).

Almost surely, 2^{42671347851556} is an apocalyptic number.

It is an amenable number.

42671347851556 is a deficient number, since it is larger than the sum of its proper divisors (32003566122104).

42671347851556 is a wasteful number, since it uses less digits than its factorization.

42671347851556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7890494 (or 7890492 counting only the distinct ones).

The product of its digits is 169344000, while the sum is 64.

The spelling of 42671347851556 in words is "forty-two trillion, six hundred seventy-one billion, three hundred forty-seven million, eight hundred fifty-one thousand, five hundred fifty-six".