26663616642131 has 4 divisors (see below), whose sum is σ = 30472704733872. Its totient is φ = 22854528550392.

The previous prime is 26663616642119. The next prime is 26663616642133. The reversal of 26663616642131 is 13124661636662.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 26663616642131 - 2¹⁴ = 26663616625747 is a prime.

It is a super-2 number, since 2×26663616642131² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26663616642133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1904544045860 + ... + 1904544045873.

It is an arithmetic number, because the mean of its divisors is an integer number (7618176183468).

Almost surely, 2^{26663616642131} is an apocalyptic number.

26663616642131 is a deficient number, since it is larger than the sum of its proper divisors (3809088091741).

26663616642131 is an equidigital number, since it uses as much as digits as its factorization.

26663616642131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3809088091740.

The product of its digits is 6718464, while the sum is 53.

The spelling of 26663616642131 in words is "twenty-six trillion, six hundred sixty-three billion, six hundred sixteen million, six hundred forty-two thousand, one hundred thirty-one".