20152255450400 has 144 divisors (see below), whose sum is σ = 52093329501024. Its totient is φ = 7586336378880.

The previous prime is 20152255450343. The next prime is 20152255450403. The reversal of 20152255450400 is 405455225102.

It is a super-2 number, since 2×20152255450400² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20152255450403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 489076199 + ... + 489117401.

It is an arithmetic number, because the mean of its divisors is an integer number (361759232646).

Almost surely, 2^{20152255450400} is an apocalyptic number.

20152255450400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20152255450400 is an abundant number, since it is smaller than the sum of its proper divisors (31941074050624).

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

20152255450400 is a wasteful number, since it uses less digits than its factorization.

20152255450400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77203 (or 77190 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 35.

The spelling of 20152255450400 in words is "twenty trillion, one hundred fifty-two billion, two hundred fifty-five million, four hundred fifty thousand, four hundred".