40145837902 has 64 divisors (see below), whose sum is σ = 65075814720. Its totient is φ = 18536103936.

The previous prime is 40145837887. The next prime is 40145837923. The reversal of 40145837902 is 20973854104.

It is a super-2 number, since 2×40145837902² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45775888 + ... + 45776764.

It is an arithmetic number, because the mean of its divisors is an integer number (1016809605).

Almost surely, 2^40145837902 is an apocalyptic number.

40145837902 is a deficient number, since it is larger than the sum of its proper divisors (24929976818).

40145837902 is a wasteful number, since it uses less digits than its factorization.

40145837902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1285.

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 40145837902 in words is "forty billion, one hundred forty-five million, eight hundred thirty-seven thousand, nine hundred two".