40157955668 has 48 divisors (see below), whose sum is σ = 73375621200. Its totient is φ = 19206942720.

The previous prime is 40157955667. The next prime is 40157955689. The reversal of 40157955668 is 86655975104.

It can be written as a sum of positive squares in 8 ways, for example, as 1359986884 + 38797968784 = 36878^2 + 196972^2 .

It is a super-2 number, since 2×40157955668² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40157955667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9040328 + ... + 9044768.

It is an arithmetic number, because the mean of its divisors is an integer number (1528658775).

Almost surely, 2^40157955668 is an apocalyptic number.

It is an amenable number.

40157955668 is a deficient number, since it is larger than the sum of its proper divisors (33217665532).

40157955668 is a wasteful number, since it uses less digits than its factorization.

40157955668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5180 (or 5178 counting only the distinct ones).

The product of its (nonzero) digits is 9072000, while the sum is 56.

The spelling of 40157955668 in words is "forty billion, one hundred fifty-seven million, nine hundred fifty-five thousand, six hundred sixty-eight".