26515464216 has 64 divisors (see below), whose sum is σ = 68149382400. Its totient is φ = 8590877568.

The previous prime is 26515464169. The next prime is 26515464223. The reversal of 26515464216 is 61246451562.

It is a super-4 number, since 4×26515464216⁴ (a number of 43 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 890221 + ... + 919523.

It is an arithmetic number, because the mean of its divisors is an integer number (1064834100).

Almost surely, 2^26515464216 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 26515464216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34074691200).

26515464216 is an abundant number, since it is smaller than the sum of its proper divisors (41633918184).

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

26515464216 is a wasteful number, since it uses less digits than its factorization.

26515464216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30368 (or 30364 counting only the distinct ones).

The product of its digits is 345600, while the sum is 42.

The spelling of 26515464216 in words is "twenty-six billion, five hundred fifteen million, four hundred sixty-four thousand, two hundred sixteen".