16557007363765 has 32 divisors (see below), whose sum is σ = 21727950854400. Its totient is φ = 12011840870400.

The previous prime is 16557007363703. The next prime is 16557007363769. The reversal of 16557007363765 is 56736370075561.

It is not a de Polignac number, because 16557007363765 - 2¹¹ = 16557007361717 is a prime.

It is a Smith number, since the sum of its digits (61) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16557007363769) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 372472261 + ... + 372516709.

It is an arithmetic number, because the mean of its divisors is an integer number (678998464200).

Almost surely, 2^{16557007363765} is an apocalyptic number.

It is an amenable number.

16557007363765 is a deficient number, since it is larger than the sum of its proper divisors (5170943490635).

16557007363765 is a wasteful number, since it uses less digits than its factorization.

16557007363765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60973.

The product of its (nonzero) digits is 83349000, while the sum is 61.

The spelling of 16557007363765 in words is "sixteen trillion, five hundred fifty-seven billion, seven million, three hundred sixty-three thousand, seven hundred sixty-five".