26215238868 has 48 divisors (see below), whose sum is σ = 75284791680. Its totient is φ = 6913908864.

The previous prime is 26215238867. The next prime is 26215238869. The reversal of 26215238868 is 86883251262.

It is an interprime number because it is at equal distance from previous prime (26215238867) and next prime (26215238869).

It is a self number, because there is not a number n which added to its sum of digits gives 26215238868.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26215238867) 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, 12002223 + ... + 12004406.

It is an arithmetic number, because the mean of its divisors is an integer number (1568433160).

Almost surely, 2^26215238868 is an apocalyptic number.

26215238868 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

26215238868 is an abundant number, since it is smaller than the sum of its proper divisors (49069552812).

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

26215238868 is a wasteful number, since it uses less digits than its factorization.

26215238868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24006656 (or 24006654 counting only the distinct ones).

The product of its digits is 2211840, while the sum is 51.

The spelling of 26215238868 in words is "twenty-six billion, two hundred fifteen million, two hundred thirty-eight thousand, eight hundred sixty-eight".