40445172612 has 72 divisors (see below), whose sum is σ = 113544355680. Its totient is φ = 12444662880.

The previous prime is 40445172577. The next prime is 40445172629. The reversal of 40445172612 is 21627154404.

40445172612 is a `hidden beast` number, since 40 + 44 + 517 + 2 + 61 + 2 = 666.

It is a super-2 number, since 2×40445172612² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 1089714 + ... + 1126217.

It is an arithmetic number, because the mean of its divisors is an integer number (1577004940).

Almost surely, 2^40445172612 is an apocalyptic number.

It is an amenable number.

40445172612 is an abundant number, since it is smaller than the sum of its proper divisors (73099183068).

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

40445172612 is a wasteful number, since it uses less digits than its factorization.

40445172612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2215970 (or 2215949 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The spelling of 40445172612 in words is "forty billion, four hundred forty-five million, one hundred seventy-two thousand, six hundred twelve".