400415236655 has 32 divisors (see below), whose sum is σ = 552678940800. Its totient is φ = 272807055360.

The previous prime is 400415236649. The next prime is 400415236699. The reversal of 400415236655 is 556632514004.

It is a happy number.

It is not a de Polignac number, because 400415236655 - 2²⁰ = 400414188079 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3374087 + ... + 3490743.

It is an arithmetic number, because the mean of its divisors is an integer number (17271216900).

Almost surely, 2^400415236655 is an apocalyptic number.

400415236655 is a deficient number, since it is larger than the sum of its proper divisors (152263704145).

400415236655 is a wasteful number, since it uses less digits than its factorization.

400415236655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117299.

The product of its (nonzero) digits is 432000, while the sum is 41.

The spelling of 400415236655 in words is "four hundred billion, four hundred fifteen million, two hundred thirty-six thousand, six hundred fifty-five".