26063987731 has 2 divisors, whose sum is σ = 26063987732. Its totient is φ = 26063987730.

The previous prime is 26063987693. The next prime is 26063987743. The reversal of 26063987731 is 13778936062.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26063987731 - 2³³ = 17474053139 is a prime.

It is a super-2 number, since 2×26063987731² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (26063987791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13031993865 + 13031993866.

It is an arithmetic number, because the mean of its divisors is an integer number (13031993866).

Almost surely, 2^26063987731 is an apocalyptic number.

26063987731 is a deficient number, since it is larger than the sum of its proper divisors (1).

26063987731 is an equidigital number, since it uses as much as digits as its factorization.

26063987731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2286144, while the sum is 52.

The spelling of 26063987731 in words is "twenty-six billion, sixty-three million, nine hundred eighty-seven thousand, seven hundred thirty-one".