401992750016 has 56 divisors (see below), whose sum is σ = 937163189424. Its totient is φ = 168668282880.

The previous prime is 401992750009. The next prime is 401992750037. The reversal of 401992750016 is 610057299104.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 21952865 + ... + 21971168.

It is an arithmetic number, because the mean of its divisors is an integer number (16735056954).

Almost surely, 2^401992750016 is an apocalyptic number.

It is an amenable number.

401992750016 is an abundant number, since it is smaller than the sum of its proper divisors (535170439408).

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

401992750016 is a wasteful number, since it uses less digits than its factorization.

401992750016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43924069 (or 43924059 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 44.

The spelling of 401992750016 in words is "four hundred one billion, nine hundred ninety-two million, seven hundred fifty thousand, sixteen".