26405361407 has 2 divisors, whose sum is σ = 26405361408. Its totient is φ = 26405361406.

The previous prime is 26405361403. The next prime is 26405361427. The reversal of 26405361407 is 70416350462.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26405361407 - 2² = 26405361403 is a prime.

It is a super-2 number, since 2×26405361407² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26405361403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13202680703 + 13202680704.

It is an arithmetic number, because the mean of its divisors is an integer number (13202680704).

Almost surely, 2^26405361407 is an apocalyptic number.

26405361407 is a deficient number, since it is larger than the sum of its proper divisors (1).

26405361407 is an equidigital number, since it uses as much as digits as its factorization.

26405361407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 38.

The spelling of 26405361407 in words is "twenty-six billion, four hundred five million, three hundred sixty-one thousand, four hundred seven".