16407874913865 has 32 divisors (see below), whose sum is σ = 26697419755776. Its totient is φ = 8602748693760.

The previous prime is 16407874913831. The next prime is 16407874913873. The reversal of 16407874913865 is 56831947870461.

It is not a de Polignac number, because 16407874913865 - 2¹⁶ = 16407874848329 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16407874913865.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3164382 + ... + 6544391.

It is an arithmetic number, because the mean of its divisors is an integer number (834294367368).

Almost surely, 2^{16407874913865} is an apocalyptic number.

16407874913865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16407874913865 is a deficient number, since it is larger than the sum of its proper divisors (10289544841911).

16407874913865 is a wasteful number, since it uses less digits than its factorization.

16407874913865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9710689.

The product of its (nonzero) digits is 243855360, while the sum is 69.

The spelling of 16407874913865 in words is "sixteen trillion, four hundred seven billion, eight hundred seventy-four million, nine hundred thirteen thousand, eight hundred sixty-five".