26641064436 has 24 divisors (see below), whose sum is σ = 71042838720. Its totient is φ = 7611732672.

The previous prime is 26641064431. The next prime is 26641064441. The reversal of 26641064436 is 63446014662.

It is an interprime number because it is at equal distance from previous prime (26641064431) and next prime (26641064441).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26641064431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158577681 + ... + 158577848.

It is an arithmetic number, because the mean of its divisors is an integer number (2960118280).

Almost surely, 2^26641064436 is an apocalyptic number.

It is an amenable number.

26641064436 is an abundant number, since it is smaller than the sum of its proper divisors (44401774284).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26641064436 is a wasteful number, since it uses less digits than its factorization.

26641064436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317155543 (or 317155541 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 42.

The spelling of 26641064436 in words is "twenty-six billion, six hundred forty-one million, sixty-four thousand, four hundred thirty-six".