26215150931 has 2 divisors, whose sum is σ = 26215150932. Its totient is φ = 26215150930.

The previous prime is 26215150919. The next prime is 26215150957. The reversal of 26215150931 is 13905151262.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26215150931 is a prime.

It is a super-2 number, since 2×26215150931² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 26215150891 and 26215150900.

It is not a weakly prime, because it can be changed into another prime (26215110931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13107575465 + 13107575466.

It is an arithmetic number, because the mean of its divisors is an integer number (13107575466).

Almost surely, 2^26215150931 is an apocalyptic number.

26215150931 is a deficient number, since it is larger than the sum of its proper divisors (1).

26215150931 is an equidigital number, since it uses as much as digits as its factorization.

26215150931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16200, while the sum is 35.

The spelling of 26215150931 in words is "twenty-six billion, two hundred fifteen million, one hundred fifty thousand, nine hundred thirty-one".