2749621734164 has 6 divisors (see below), whose sum is σ = 4811838034794. Its totient is φ = 1374810867080.

The previous prime is 2749621734161. The next prime is 2749621734193. The reversal of 2749621734164 is 4614371269472.

It can be written as a sum of positive squares in only one way, i.e., 2690446306564 + 59175427600 = 1640258^2 + 243260^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2749621734161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343702716767 + ... + 343702716774.

It is an arithmetic number, because the mean of its divisors is an integer number (801973005799).

Almost surely, 2^{2749621734164} is an apocalyptic number.

It is an amenable number.

2749621734164 is a deficient number, since it is larger than the sum of its proper divisors (2062216300630).

2749621734164 is a wasteful number, since it uses less digits than its factorization.

2749621734164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687405433545 (or 687405433543 counting only the distinct ones).

The product of its digits is 12192768, while the sum is 56.

The spelling of 2749621734164 in words is "two trillion, seven hundred forty-nine billion, six hundred twenty-one million, seven hundred thirty-four thousand, one hundred sixty-four".