26363945345257 has 32 divisors (see below), whose sum is σ = 31310779781120. Its totient is φ = 21978390519360.

The previous prime is 26363945345249. The next prime is 26363945345291. The reversal of 26363945345257 is 75254354936362.

It is a cyclic number.

It is not a de Polignac number, because 26363945345257 - 2³ = 26363945345249 is a prime.

It is a super-2 number, since 2×26363945345257² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (26363945345957) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25181883 + ... + 26207920.

It is an arithmetic number, because the mean of its divisors is an integer number (978461868160).

Almost surely, 2^{26363945345257} is an apocalyptic number.

It is an amenable number.

26363945345257 is a deficient number, since it is larger than the sum of its proper divisors (4946834435863).

26363945345257 is a wasteful number, since it uses less digits than its factorization.

26363945345257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51389933.

The product of its digits is 489888000, while the sum is 64.

The spelling of 26363945345257 in words is "twenty-six trillion, three hundred sixty-three billion, nine hundred forty-five million, three hundred forty-five thousand, two hundred fifty-seven".