400345511000 has 32 divisors (see below), whose sum is σ = 936808498080. Its totient is φ = 160138204000.

The previous prime is 400345510991. The next prime is 400345511017. The reversal of 400345511000 is 115543004.

It is a super-2 number, since 2×400345511000² (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 7 ways as a sum of consecutive naturals, for example, 200171756 + ... + 200173755.

It is an arithmetic number, because the mean of its divisors is an integer number (29275265565).

Almost surely, 2^400345511000 is an apocalyptic number.

400345511000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

400345511000 is an abundant number, since it is smaller than the sum of its proper divisors (536462987080).

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

400345511000 is a wasteful number, since it uses less digits than its factorization.

400345511000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400345532 (or 400345518 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The spelling of 400345511000 in words is "four hundred billion, three hundred forty-five million, five hundred eleven thousand".