1373137740681 has 8 divisors (see below), whose sum is σ = 2092400366784. Its totient is φ = 784650137520.

The previous prime is 1373137740671. The next prime is 1373137740707. The reversal of 1373137740681 is 1860477313731.

It is a happy number.

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

It is not a de Polignac number, because 1373137740681 - 2³⁰ = 1372063998857 is a prime.

It is a super-2 number, since 2×1373137740681² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1373137740671) 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, 32693755710 + ... + 32693755751.

It is an arithmetic number, because the mean of its divisors is an integer number (261550045848).

Almost surely, 2^{1373137740681} is an apocalyptic number.

It is an amenable number.

1373137740681 is a deficient number, since it is larger than the sum of its proper divisors (719262626103).

1373137740681 is an equidigital number, since it uses as much as digits as its factorization.

1373137740681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65387511471.

The product of its (nonzero) digits is 1778112, while the sum is 51.

The spelling of 1373137740681 in words is "one trillion, three hundred seventy-three billion, one hundred thirty-seven million, seven hundred forty thousand, six hundred eighty-one".