26510564496 has 80 divisors (see below), whose sum is σ = 74062759680. Its totient is φ = 8122920960.

The previous prime is 26510564477. The next prime is 26510564519. The reversal of 26510564496 is 69446501562.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60256 + ... + 238016.

It is an arithmetic number, because the mean of its divisors is an integer number (925784496).

Almost surely, 2^26510564496 is an apocalyptic number.

26510564496 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26510564496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37031379840).

26510564496 is an abundant number, since it is smaller than the sum of its proper divisors (47552195184).

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

26510564496 is a wasteful number, since it uses less digits than its factorization.

26510564496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178024 (or 178018 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 48.

The spelling of 26510564496 in words is "twenty-six billion, five hundred ten million, five hundred sixty-four thousand, four hundred ninety-six".