400264260464 has 20 divisors (see below), whose sum is σ = 775594163856. Its totient is φ = 200110927872.

The previous prime is 400264260463. The next prime is 400264260479. The reversal of 400264260464 is 464062462004.

It is a super-2 number, since 2×400264260464² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400264260463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1168844 + ... + 1471979.

Almost surely, 2^400264260464 is an apocalyptic number.

It is an amenable number.

400264260464 is a deficient number, since it is larger than the sum of its proper divisors (375329903392).

400264260464 is a wasteful number, since it uses less digits than its factorization.

400264260464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2650304 (or 2650298 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 38.

The spelling of 400264260464 in words is "four hundred billion, two hundred sixty-four million, two hundred sixty thousand, four hundred sixty-four".