400162445623520 has 48 divisors (see below), whose sum is σ = 945424593888768. Its totient is φ = 160058067586560.

The previous prime is 400162445623517. The next prime is 400162445623547. The reversal of 400162445623520 is 25326544261004.

It is a happy number.

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, 50271251 + ... + 57684690.

It is an arithmetic number, because the mean of its divisors is an integer number (19696345706016).

Almost surely, 2^{400162445623520} is an apocalyptic number.

400162445623520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

400162445623520 is an abundant number, since it is smaller than the sum of its proper divisors (545262148265248).

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

400162445623520 is a wasteful number, since it uses less digits than its factorization.

400162445623520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107979123 (or 107979115 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 44.

Adding to 400162445623520 its reverse (25326544261004), we get a palindrome (425488989884524).

The spelling of 400162445623520 in words is "four hundred trillion, one hundred sixty-two billion, four hundred forty-five million, six hundred twenty-three thousand, five hundred twenty".