26564655450 has 48 divisors (see below), whose sum is σ = 65898255456. Its totient is φ = 7081982400.

The previous prime is 26564655433. The next prime is 26564655473. The reversal of 26564655450 is 5455646562.

It is a self number, because there is not a number n which added to its sum of digits gives 26564655450.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 579885 + ... + 624015.

It is an arithmetic number, because the mean of its divisors is an integer number (1372880322).

Almost surely, 2^26564655450 is an apocalyptic number.

26564655450 is an abundant number, since it is smaller than the sum of its proper divisors (39333600006).

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

26564655450 is a wasteful number, since it uses less digits than its factorization.

26564655450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48159 (or 48154 counting only the distinct ones).

The product of its (nonzero) digits is 4320000, while the sum is 48.

The spelling of 26564655450 in words is "twenty-six billion, five hundred sixty-four million, six hundred fifty-five thousand, four hundred fifty".