16541764734621 has 16 divisors (see below), whose sum is σ = 26533156467200. Its totient is φ = 8954940307248.

The previous prime is 16541764734601. The next prime is 16541764734643. The reversal of 16541764734621 is 12643746714561.

It is not a de Polignac number, because 16541764734621 - 2¹³ = 16541764726429 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16541764734601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20729028091 + ... + 20729028888.

It is an arithmetic number, because the mean of its divisors is an integer number (1658322279200).

Almost surely, 2^{16541764734621} is an apocalyptic number.

It is an amenable number.

16541764734621 is a deficient number, since it is larger than the sum of its proper divisors (9991391732579).

16541764734621 is a wasteful number, since it uses less digits than its factorization.

16541764734621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41458057008.

The product of its digits is 20321280, while the sum is 57.

The spelling of 16541764734621 in words is "sixteen trillion, five hundred forty-one billion, seven hundred sixty-four million, seven hundred thirty-four thousand, six hundred twenty-one".