400258677616 has 40 divisors (see below), whose sum is σ = 886320414720. Its totient is φ = 171532979904.

The previous prime is 400258677607. The next prime is 400258677617. The reversal of 400258677616 is 616776852004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400258677617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4036665 + ... + 4134631.

It is an arithmetic number, because the mean of its divisors is an integer number (22158010368).

Almost surely, 2^400258677616 is an apocalyptic number.

It is an amenable number.

400258677616 is an abundant number, since it is smaller than the sum of its proper divisors (486061737104).

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

400258677616 is a wasteful number, since it uses less digits than its factorization.

400258677616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134461 (or 134455 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 52.

The spelling of 400258677616 in words is "four hundred billion, two hundred fifty-eight million, six hundred seventy-seven thousand, six hundred sixteen".