26423012731 has 2 divisors, whose sum is σ = 26423012732. Its totient is φ = 26423012730.

The previous prime is 26423012683. The next prime is 26423012809. The reversal of 26423012731 is 13721032462.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26423012731 is a prime.

It is a super-2 number, since 2×26423012731² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 26423012693 and 26423012702.

It is not a weakly prime, because it can be changed into another prime (26423016731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13211506365 + 13211506366.

It is an arithmetic number, because the mean of its divisors is an integer number (13211506366).

Almost surely, 2^26423012731 is an apocalyptic number.

26423012731 is a deficient number, since it is larger than the sum of its proper divisors (1).

26423012731 is an equidigital number, since it uses as much as digits as its factorization.

26423012731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 31.

The spelling of 26423012731 in words is "twenty-six billion, four hundred twenty-three million, twelve thousand, seven hundred thirty-one".