400137916528 has 20 divisors (see below), whose sum is σ = 886019672560. Its totient is φ = 171487678464.

The previous prime is 400137916487. The next prime is 400137916543. The reversal of 400137916528 is 825619731004.

It is a super-2 number, since 2×400137916528² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1786329873 + ... + 1786330096.

It is an arithmetic number, because the mean of its divisors is an integer number (44300983628).

It is a 1-persistent number, because it is pandigital, but 2⋅400137916528 = 800275833056 is not.

Almost surely, 2^400137916528 is an apocalyptic number.

It is an amenable number.

400137916528 is an abundant number, since it is smaller than the sum of its proper divisors (485881756032).

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

400137916528 is a wasteful number, since it uses less digits than its factorization.

400137916528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3572659984 (or 3572659978 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 46.

The spelling of 400137916528 in words is "four hundred billion, one hundred thirty-seven million, nine hundred sixteen thousand, five hundred twenty-eight".