26458648656 has 160 divisors (see below), whose sum is σ = 75209472000. Its totient is φ = 7948876800.

The previous prime is 26458648651. The next prime is 26458648661. The reversal of 26458648656 is 65684685462.

It is an interprime number because it is at equal distance from previous prime (26458648651) and next prime (26458648661).

It is a self number, because there is not a number n which added to its sum of digits gives 26458648656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26458648651) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53023095 + ... + 53023593.

It is an arithmetic number, because the mean of its divisors is an integer number (470059200).

Almost surely, 2^26458648656 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 26458648656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37604736000).

26458648656 is an abundant number, since it is smaller than the sum of its proper divisors (48750823344).

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

26458648656 is a wasteful number, since it uses less digits than its factorization.

26458648656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1185 (or 1179 counting only the distinct ones).

The product of its digits is 66355200, while the sum is 60.

The spelling of 26458648656 in words is "twenty-six billion, four hundred fifty-eight million, six hundred forty-eight thousand, six hundred fifty-six".