7479137107681 has 16 divisors (see below), whose sum is σ = 7825301028864. Its totient is φ = 7134740507664.

The previous prime is 7479137107669. The next prime is 7479137107699. The reversal of 7479137107681 is 1867017319747.

It is a cyclic number.

It is not a de Polignac number, because 7479137107681 - 2²⁵ = 7479103553249 is a prime.

It is a super-2 number, since 2×7479137107681² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7479137107621) 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, 17520280 + ... + 17942086.

It is an arithmetic number, because the mean of its divisors is an integer number (489081314304).

Almost surely, 2^{7479137107681} is an apocalyptic number.

It is an amenable number.

7479137107681 is a deficient number, since it is larger than the sum of its proper divisors (346163921183).

7479137107681 is a wasteful number, since it uses less digits than its factorization.

7479137107681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423900.

The product of its (nonzero) digits is 12446784, while the sum is 61.

The spelling of 7479137107681 in words is "seven trillion, four hundred seventy-nine billion, one hundred thirty-seven million, one hundred seven thousand, six hundred eighty-one".