26608142464 has 64 divisors (see below), whose sum is σ = 53467404480. Its totient is φ = 13189248000.

The previous prime is 26608142443. The next prime is 26608142471. The reversal of 26608142464 is 46424180662.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 26608142464.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12426834 + ... + 12428974.

It is an arithmetic number, because the mean of its divisors is an integer number (835428195).

Almost surely, 2^26608142464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26608142464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26733702240).

26608142464 is an abundant number, since it is smaller than the sum of its proper divisors (26859262016).

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

26608142464 is a wasteful number, since it uses less digits than its factorization.

26608142464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2949 (or 2937 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 43.

The spelling of 26608142464 in words is "twenty-six billion, six hundred eight million, one hundred forty-two thousand, four hundred sixty-four".