400901028465 has 32 divisors (see below), whose sum is σ = 750956080896. Its totient is φ = 178799063040.

The previous prime is 400901028461. The next prime is 400901028467. The reversal of 400901028465 is 564820109004.

It is not a de Polignac number, because 400901028465 - 2² = 400901028461 is a prime.

It is a super-3 number, since 3×400901028465³ (a number of 36 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (400901028461) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46557952 + ... + 46566561.

It is an arithmetic number, because the mean of its divisors is an integer number (23467377528).

Almost surely, 2^400901028465 is an apocalyptic number.

It is an amenable number.

400901028465 is a deficient number, since it is larger than the sum of its proper divisors (350055052431).

400901028465 is a wasteful number, since it uses less digits than its factorization.

400901028465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93124569.

The product of its (nonzero) digits is 69120, while the sum is 39.

The spelling of 400901028465 in words is "four hundred billion, nine hundred one million, twenty-eight thousand, four hundred sixty-five".