26645766047420 has 96 divisors (see below), whose sum is σ = 60442027632000. Its totient is φ = 9808826056704.

The previous prime is 26645766047339. The next prime is 26645766047431. The reversal of 26645766047420 is 2474066754662.

It is a self number, because there is not a number n which added to its sum of digits gives 26645766047420.

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, 132724076 + ... + 132924684.

It is an arithmetic number, because the mean of its divisors is an integer number (629604454500).

Almost surely, 2^{26645766047420} is an apocalyptic number.

26645766047420 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 26645766047420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30221013816000).

26645766047420 is an abundant number, since it is smaller than the sum of its proper divisors (33796261584580).

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

26645766047420 is a wasteful number, since it uses less digits than its factorization.

26645766047420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202167 (or 202165 counting only the distinct ones).

The product of its (nonzero) digits is 81285120, while the sum is 59.

The spelling of 26645766047420 in words is "twenty-six trillion, six hundred forty-five billion, seven hundred sixty-six million, forty-seven thousand, four hundred twenty".