406721953750 has 40 divisors (see below), whose sum is σ = 871268167440. Its totient is φ = 139447524000.

The previous prime is 406721953733. The next prime is 406721953831. The reversal of 406721953750 is 57359127604.

It is a junction number, because it is equal to n+sod(n) for n = 406721953694 and 406721953703.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 23232505 + ... + 23250004.

It is an arithmetic number, because the mean of its divisors is an integer number (21781704186).

Almost surely, 2^406721953750 is an apocalyptic number.

406721953750 is an abundant number, since it is smaller than the sum of its proper divisors (464546213690).

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

406721953750 is an equidigital number, since it uses as much as digits as its factorization.

406721953750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46482538 (or 46482523 counting only the distinct ones).

The product of its (nonzero) digits is 1587600, while the sum is 49.

The spelling of 406721953750 in words is "four hundred six billion, seven hundred twenty-one million, nine hundred fifty-three thousand, seven hundred fifty".