16320538477860 has 24 divisors (see below), whose sum is σ = 45697507738176. Its totient is φ = 4352143594080.

The previous prime is 16320538477849. The next prime is 16320538477871. The reversal of 16320538477860 is 6877483502361.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (16320538477849) and next prime (16320538477871).

It is a Harshad number since it is a multiple of its sum of digits (60), and also a Moran number because the ratio is a prime number: 272008974631 = 16320538477860 / (1 + 6 + 3 + 2 + 0 + 5 + 3 + 8 + 4 + 7 + 7 + 8 + 6 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 16320538477794 and 16320538477803.

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, 136004487256 + ... + 136004487375.

It is an arithmetic number, because the mean of its divisors is an integer number (1904062822424).

Almost surely, 2^{16320538477860} is an apocalyptic number.

16320538477860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16320538477860 is an abundant number, since it is smaller than the sum of its proper divisors (29376969260316).

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

16320538477860 is a wasteful number, since it uses less digits than its factorization.

16320538477860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272008974643 (or 272008974641 counting only the distinct ones).

The product of its (nonzero) digits is 40642560, while the sum is 60.

The spelling of 16320538477860 in words is "sixteen trillion, three hundred twenty billion, five hundred thirty-eight million, four hundred seventy-seven thousand, eight hundred sixty".