3754371311561 has 16 divisors (see below), whose sum is σ = 4182730535760. Its totient is φ = 3345957538560.

The previous prime is 3754371311497. The next prime is 3754371311591. The reversal of 3754371311561 is 1651131734573.

It can be written as a sum of positive squares in 8 ways, for example, as 1296512436025 + 2457858875536 = 1138645^2 + 1567756^2 .

It is not a de Polignac number, because 3754371311561 - 2⁶ = 3754371311497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3754371311591) 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, 12157691 + ... + 12462671.

It is an arithmetic number, because the mean of its divisors is an integer number (261420658485).

Almost surely, 2^{3754371311561} is an apocalyptic number.

It is an amenable number.

3754371311561 is a deficient number, since it is larger than the sum of its proper divisors (428359224199).

3754371311561 is a wasteful number, since it uses less digits than its factorization.

3754371311561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337676.

The product of its digits is 793800, while the sum is 47.

The spelling of 3754371311561 in words is "three trillion, seven hundred fifty-four billion, three hundred seventy-one million, three hundred eleven thousand, five hundred sixty-one".