26515226620 has 48 divisors (see below), whose sum is σ = 58838492160. Its totient is φ = 10016525376.

The previous prime is 26515226593. The next prime is 26515226627. The reversal of 26515226620 is 2662251562.

It is a self number, because there is not a number n which added to its sum of digits gives 26515226620.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26515226627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 328482 + ... + 401161.

It is an arithmetic number, because the mean of its divisors is an integer number (1225801920).

Almost surely, 2^26515226620 is an apocalyptic number.

26515226620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26515226620 is an abundant number, since it is smaller than the sum of its proper divisors (32323265540).

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

26515226620 is a wasteful number, since it uses less digits than its factorization.

26515226620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729754 (or 729752 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 26515226620 in words is "twenty-six billion, five hundred fifteen million, two hundred twenty-six thousand, six hundred twenty".