26290505504 has 48 divisors (see below), whose sum is σ = 54506652480. Its totient is φ = 12448131840.

The previous prime is 26290505443. The next prime is 26290505509. The reversal of 26290505504 is 40550509262.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is not an unprimeable number, because it can be changed into a prime (26290505509) 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, 1689182 + ... + 1704674.

It is an arithmetic number, because the mean of its divisors is an integer number (1135555260).

Almost surely, 2^26290505504 is an apocalyptic number.

It is an amenable number.

26290505504 is an abundant number, since it is smaller than the sum of its proper divisors (28216146976).

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

26290505504 is a wasteful number, since it uses less digits than its factorization.

26290505504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18313 (or 18305 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 38.

The spelling of 26290505504 in words is "twenty-six billion, two hundred ninety million, five hundred five thousand, five hundred four".