400840888080 has 80 divisors (see below), whose sum is σ = 1243668775104. Its totient is φ = 106799546880.

The previous prime is 400840888061. The next prime is 400840888103. The reversal of 400840888080 is 80888048004.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 432099 + ... + 994178.

Almost surely, 2^400840888080 is an apocalyptic number.

400840888080 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

400840888080 is an abundant number, since it is smaller than the sum of its proper divisors (842827887024).

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

400840888080 is a wasteful number, since it uses less digits than its factorization.

400840888080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1427464 (or 1427458 counting only the distinct ones).

The product of its (nonzero) digits is 524288, while the sum is 48.

The spelling of 400840888080 in words is "four hundred billion, eight hundred forty million, eight hundred eighty-eight thousand, eighty".