26631064740720 has 160 divisors (see below), whose sum is σ = 90084446369280. Its totient is φ = 6454364984320.

The previous prime is 26631064740703. The next prime is 26631064740781. The reversal of 26631064740720 is 2704746013662.

It is a super-2 number, since 2×26631064740720² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 26631064740720.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9053221 + ... + 11628539.

It is an arithmetic number, because the mean of its divisors is an integer number (563027789808).

Almost surely, 2^{26631064740720} is an apocalyptic number.

26631064740720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26631064740720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45042223184640).

26631064740720 is an abundant number, since it is smaller than the sum of its proper divisors (63453381628560).

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

26631064740720 is a wasteful number, since it uses less digits than its factorization.

26631064740720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2579263 (or 2579257 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 48.

The spelling of 26631064740720 in words is "twenty-six trillion, six hundred thirty-one billion, sixty-four million, seven hundred forty thousand, seven hundred twenty".