16555266412761 has 16 divisors (see below), whose sum is σ = 22294789574400. Its totient is φ = 10926837010128.

The previous prime is 16555266412753. The next prime is 16555266412787. The reversal of 16555266412761 is 16721466255561.

It is not a de Polignac number, because 16555266412761 - 2³ = 16555266412753 is a prime.

It is a super-3 number, since 3×16555266412761³ (a number of 41 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (16555266416761) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67783771 + ... + 68027568.

It is an arithmetic number, because the mean of its divisors is an integer number (1393424348400).

Almost surely, 2^{16555266412761} is an apocalyptic number.

It is an amenable number.

16555266412761 is a deficient number, since it is larger than the sum of its proper divisors (5739523161639).

16555266412761 is a wasteful number, since it uses less digits than its factorization.

16555266412761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135811748.

The product of its digits is 18144000, while the sum is 57.

The spelling of 16555266412761 in words is "sixteen trillion, five hundred fifty-five billion, two hundred sixty-six million, four hundred twelve thousand, seven hundred sixty-one".