405250632640 has 112 divisors (see below), whose sum is σ = 1103055496704. Its totient is φ = 138918528000.

The previous prime is 405250632613. The next prime is 405250632667. The reversal of 405250632640 is 46236052504.

It is an interprime number because it is at equal distance from previous prime (405250632613) and next prime (405250632667).

It is a tau number, because it is divible by the number of its divisors (112).

It is a self number, because there is not a number n which added to its sum of digits gives 405250632640.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16453935 + ... + 16478545.

It is an arithmetic number, because the mean of its divisors is an integer number (9848709792).

Almost surely, 2^405250632640 is an apocalyptic number.

405250632640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

405250632640 is an abundant number, since it is smaller than the sum of its proper divisors (697804864064).

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

405250632640 is a wasteful number, since it uses less digits than its factorization.

405250632640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31986 (or 31976 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 37.

The spelling of 405250632640 in words is "four hundred five billion, two hundred fifty million, six hundred thirty-two thousand, six hundred forty".