40367645172 has 36 divisors (see below), whose sum is σ = 102489974496. Its totient is φ = 13396602000.

The previous prime is 40367645113. The next prime is 40367645173. The reversal of 40367645172 is 27154676304.

40367645172 is a `hidden beast` number, since 40 + 36 + 7 + 64 + 517 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40367645173) 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 11 ways as a sum of consecutive naturals, for example, 2461704 + ... + 2478047.

It is an arithmetic number, because the mean of its divisors is an integer number (2846943736).

Almost surely, 2^40367645172 is an apocalyptic number.

It is an amenable number.

40367645172 is an abundant number, since it is smaller than the sum of its proper divisors (62122329324).

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

40367645172 is a wasteful number, since it uses less digits than its factorization.

40367645172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4939988 (or 4939983 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 45.

The spelling of 40367645172 in words is "forty billion, three hundred sixty-seven million, six hundred forty-five thousand, one hundred seventy-two".