26401722050 has 54 divisors (see below), whose sum is σ = 54003190059. Its totient is φ = 9596030400.

The previous prime is 26401722029. The next prime is 26401722077. The reversal of 26401722050 is 5022710462.

It is a happy number.

It can be written as a sum of positive squares in 5 ways, for example, as 20471027929 + 5930694121 = 143077^2 + 77011^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=114895.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 12637406 + ... + 12639494.

Almost surely, 2^26401722050 is an apocalyptic number.

26401722050 is an abundant number, since it is smaller than the sum of its proper divisors (27601468009).

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

26401722050 is an equidigital number, since it uses as much as digits as its factorization.

26401722050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4212 (or 2107 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The spelling of 26401722050 in words is "twenty-six billion, four hundred one million, seven hundred twenty-two thousand, fifty".