15400827500816 has 40 divisors (see below), whose sum is σ = 31421161521120. Its totient is φ = 7292439472896.

The previous prime is 15400827500783. The next prime is 15400827500899. The reversal of 15400827500816 is 61800572800451.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8511890 + ... + 10161393.

It is an arithmetic number, because the mean of its divisors is an integer number (785529038028).

Almost surely, 2^{15400827500816} is an apocalyptic number.

15400827500816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

15400827500816 is an abundant number, since it is smaller than the sum of its proper divisors (16020334020304).

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

15400827500816 is a wasteful number, since it uses less digits than its factorization.

15400827500816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18676023 (or 18676017 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 47.

The spelling of 15400827500816 in words is "fifteen trillion, four hundred billion, eight hundred twenty-seven million, five hundred thousand, eight hundred sixteen".