40657847472 has 120 divisors (see below), whose sum is σ = 125625584448. Its totient is φ = 12172080000.

The previous prime is 40657847467. The next prime is 40657847473. The reversal of 40657847472 is 27474875604.

40657847472 is a `hidden beast` number, since 4 + 0 + 65 + 78 + 47 + 472 = 666.

It is a super-2 number, since 2×40657847472² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40657847473) 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 23 ways as a sum of consecutive naturals, for example, 23154 + ... + 286097.

Almost surely, 2^40657847472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40657847472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62812792224).

40657847472 is an abundant number, since it is smaller than the sum of its proper divisors (84967736976).

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

40657847472 is a wasteful number, since it uses less digits than its factorization.

40657847472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309359 (or 309350 counting only the distinct ones).

The product of its (nonzero) digits is 10536960, while the sum is 54.

The spelling of 40657847472 in words is "forty billion, six hundred fifty-seven million, eight hundred forty-seven thousand, four hundred seventy-two".