16764060991 has 8 divisors (see below), whose sum is σ = 18057222144. Its totient is φ = 15517923960.

The previous prime is 16764060967. The next prime is 16764061009. The reversal of 16764060991 is 19906046761.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16764060991 - 2¹⁹ = 16763536703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16764060091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11755291 + ... + 11756716.

It is an arithmetic number, because the mean of its divisors is an integer number (2257152768).

Almost surely, 2^16764060991 is an apocalyptic number.

16764060991 is a deficient number, since it is larger than the sum of its proper divisors (1293161153).

16764060991 is a wasteful number, since it uses less digits than its factorization.

16764060991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23512061.

The product of its (nonzero) digits is 489888, while the sum is 49.

The spelling of 16764060991 in words is "sixteen billion, seven hundred sixty-four million, sixty thousand, nine hundred ninety-one".