15400777855400 has 48 divisors (see below), whose sum is σ = 40922066876640. Its totient is φ = 5280266692800.

The previous prime is 15400777855369. The next prime is 15400777855433. The reversal of 15400777855400 is 455877700451.

It is a happy number.

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 11 ways as a sum of consecutive naturals, for example, 5500276406 + ... + 5500279205.

It is an arithmetic number, because the mean of its divisors is an integer number (852543059930).

Almost surely, 2^{15400777855400} is an apocalyptic number.

15400777855400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15400777855400 is an abundant number, since it is smaller than the sum of its proper divisors (25521289021240).

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

15400777855400 is a wasteful number, since it uses less digits than its factorization.

15400777855400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11000555634 (or 11000555625 counting only the distinct ones).

The product of its (nonzero) digits is 5488000, while the sum is 53.

The spelling of 15400777855400 in words is "fifteen trillion, four hundred billion, seven hundred seventy-seven million, eight hundred fifty-five thousand, four hundred".