16555020100345 has 32 divisors (see below), whose sum is σ = 21899050260768. Its totient is φ = 11961927548928.

The previous prime is 16555020100331. The next prime is 16555020100397. The reversal of 16555020100345 is 54300102055561.

It is a happy number.

16555020100345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 16 ways, for example, as 5159405241 + 16549860695104 = 71829^2 + 4068152^2 .

It is a cyclic number.

It is not a de Polignac number, because 16555020100345 - 2⁵ = 16555020100313 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

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, 35824644 + ... + 36283813.

It is an arithmetic number, because the mean of its divisors is an integer number (684345320649).

Almost surely, 2^{16555020100345} is an apocalyptic number.

It is an amenable number.

16555020100345 is a deficient number, since it is larger than the sum of its proper divisors (5344030160423).

16555020100345 is a wasteful number, since it uses less digits than its factorization.

16555020100345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72108589.

The product of its (nonzero) digits is 90000, while the sum is 37.

The spelling of 16555020100345 in words is "sixteen trillion, five hundred fifty-five billion, twenty million, one hundred thousand, three hundred forty-five".