40639997484576 has 576 divisors, whose sum is σ = 140572616970240. Its totient is φ = 10871995392000.

The previous prime is 40639997484571. The next prime is 40639997484643. The reversal of 40639997484576 is 67548479993604.

40639997484576 is a `hidden beast` number, since 4 + 0 + 6 + 3 + 9 + 99 + 74 + 8 + 457 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 40639997484495 and 40639997484504.

It is not an unprimeable number, because it can be changed into a prime (40639997484571) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 8937758335 + ... + 8937762881.

It is an arithmetic number, because the mean of its divisors is an integer number (244049682240).

Almost surely, 2^{40639997484576} 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 40639997484576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70286308485120).

40639997484576 is an abundant number, since it is smaller than the sum of its proper divisors (99932619485664).

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

40639997484576 is a wasteful number, since it uses less digits than its factorization.

40639997484576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5877 (or 5866 counting only the distinct ones).

The product of its (nonzero) digits is 9876142080, while the sum is 81.

The spelling of 40639997484576 in words is "forty trillion, six hundred thirty-nine billion, nine hundred ninety-seven million, four hundred eighty-four thousand, five hundred seventy-six".