15400255444100 has 18 divisors (see below), whose sum is σ = 33418554313914. Its totient is φ = 6160102177600.

The previous prime is 15400255444069. The next prime is 15400255444109. The reversal of 15400255444100 is 144455200451.

It can be written as a sum of positive squares in 3 ways, for example, as 130401876544 + 15269853567556 = 361112^2 + 3907666^2 .

It is not an unprimeable number, because it can be changed into a prime (15400255444109) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 77001277121 + ... + 77001277320.

It is an arithmetic number, because the mean of its divisors is an integer number (1856586350773).

Almost surely, 2^{15400255444100} is an apocalyptic number.

15400255444100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15400255444100 is an abundant number, since it is smaller than the sum of its proper divisors (18018298869814).

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

15400255444100 is a wasteful number, since it uses less digits than its factorization.

15400255444100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154002554455 (or 154002554448 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 35.

The spelling of 15400255444100 in words is "fifteen trillion, four hundred billion, two hundred fifty-five million, four hundred forty-four thousand, one hundred".