42156056663 has 12 divisors (see below), whose sum is σ = 51923307312. Its totient is φ = 34008246720.

The previous prime is 42156056647. The next prime is 42156056669. The reversal of 42156056663 is 36665065124.

It is not a de Polignac number, because 42156056663 - 2⁴ = 42156056647 is a prime.

It is a super-2 number, since 2×42156056663² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42156056669) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25302923 + ... + 25304588.

It is an arithmetic number, because the mean of its divisors is an integer number (4326942276).

Almost surely, 2^42156056663 is an apocalyptic number.

42156056663 is a deficient number, since it is larger than the sum of its proper divisors (9767250649).

42156056663 is a wasteful number, since it uses less digits than its factorization.

42156056663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50607542 (or 50607535 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 44.

The spelling of 42156056663 in words is "forty-two billion, one hundred fifty-six million, fifty-six thousand, six hundred sixty-three".