400315871280 has 80 divisors (see below), whose sum is σ = 1336439149920. Its totient is φ = 98539290624.

The previous prime is 400315871279. The next prime is 400315871297. The reversal of 400315871280 is 82178513004.

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 (39).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64150065 + ... + 64156304.

It is an arithmetic number, because the mean of its divisors is an integer number (16705489374).

Almost surely, 2^400315871280 is an apocalyptic number.

400315871280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

400315871280 is an abundant number, since it is smaller than the sum of its proper divisors (936123278640).

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

400315871280 is a wasteful number, since it uses less digits than its factorization.

400315871280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128306398 (or 128306392 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 39.

The spelling of 400315871280 in words is "four hundred billion, three hundred fifteen million, eight hundred seventy-one thousand, two hundred eighty".