26287635460 has 12 divisors (see below), whose sum is σ = 55204034508. Its totient is φ = 10515054176.

The previous prime is 26287635457. The next prime is 26287635467. The reversal of 26287635460 is 6453678262.

It can be written as a sum of positive squares in 2 ways, for example, as 9204099844 + 17083535616 = 95938^2 + 130704^2 .

It is not an unprimeable number, because it can be changed into a prime (26287635467) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 657190867 + ... + 657190906.

It is an arithmetic number, because the mean of its divisors is an integer number (4600336209).

Almost surely, 2^26287635460 is an apocalyptic number.

26287635460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26287635460 is an abundant number, since it is smaller than the sum of its proper divisors (28916399048).

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

26287635460 is a wasteful number, since it uses less digits than its factorization.

26287635460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1314381782 (or 1314381780 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 49.

The spelling of 26287635460 in words is "twenty-six billion, two hundred eighty-seven million, six hundred thirty-five thousand, four hundred sixty".