400502045555220 has 72 divisors (see below), whose sum is σ = 1304492376960864. Its totient is φ = 91543324697664.

The previous prime is 400502045555177. The next prime is 400502045555399. The reversal of 400502045555220 is 22555540205004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68112589842 + ... + 68112595721.

It is an arithmetic number, because the mean of its divisors is an integer number (18117949680012).

Almost surely, 2^{400502045555220} is an apocalyptic number.

It is an amenable number.

400502045555220 is an abundant number, since it is smaller than the sum of its proper divisors (903990331405644).

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

400502045555220 is a wasteful number, since it uses less digits than its factorization.

400502045555220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136225185589 (or 136225185580 counting only the distinct ones).

The product of its (nonzero) digits is 400000, while the sum is 39.

The spelling of 400502045555220 in words is "four hundred trillion, five hundred two billion, forty-five million, five hundred fifty-five thousand, two hundred twenty".