40161157248856 has 64 divisors (see below), whose sum is σ = 88837286952960. Its totient is φ = 16656411024000.

The previous prime is 40161157248703. The next prime is 40161157248857. The reversal of 40161157248856 is 65884275116104.

It is a happy number.

It is a super-2 number, since 2×40161157248856² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40161157248856.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40161157248857) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120209161 + ... + 120542791.

It is an arithmetic number, because the mean of its divisors is an integer number (1388082608640).

Almost surely, 2^{40161157248856} is an apocalyptic number.

It is an amenable number.

40161157248856 is an abundant number, since it is smaller than the sum of its proper divisors (48676129704104).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40161157248856 is a wasteful number, since it uses less digits than its factorization.

40161157248856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403016 (or 403012 counting only the distinct ones).

The product of its (nonzero) digits is 12902400, while the sum is 58.

The spelling of 40161157248856 in words is "forty trillion, one hundred sixty-one billion, one hundred fifty-seven million, two hundred forty-eight thousand, eight hundred fifty-six".