26410642257 has 16 divisors (see below), whose sum is σ = 37155648320. Its totient is φ = 16640769600.

The previous prime is 26410642243. The next prime is 26410642277. The reversal of 26410642257 is 75224601462.

It is not a de Polignac number, because 26410642257 - 2¹² = 26410638161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26410642277) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 526294 + ... + 574287.

It is an arithmetic number, because the mean of its divisors is an integer number (2322228020).

Almost surely, 2^26410642257 is an apocalyptic number.

It is an amenable number.

26410642257 is a deficient number, since it is larger than the sum of its proper divisors (10745006063).

26410642257 is a wasteful number, since it uses less digits than its factorization.

26410642257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1101024.

The product of its (nonzero) digits is 161280, while the sum is 39.

The spelling of 26410642257 in words is "twenty-six billion, four hundred ten million, six hundred forty-two thousand, two hundred fifty-seven".