26445021700 has 72 divisors (see below), whose sum is σ = 59467209480. Its totient is φ = 10195584000.

The previous prime is 26445021661. The next prime is 26445021703. The reversal of 26445021700 is 712054462.

It can be written as a sum of positive squares in 12 ways, for example, as 172501956 + 26272519744 = 13134^2 + 162088^2 .

It is not an unprimeable number, because it can be changed into a prime (26445021703) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1735314 + ... + 1750486.

It is an arithmetic number, because the mean of its divisors is an integer number (825933465).

Almost surely, 2^26445021700 is an apocalyptic number.

26445021700 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 26445021700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29733604740).

26445021700 is an abundant number, since it is smaller than the sum of its proper divisors (33022187780).

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

26445021700 is a wasteful number, since it uses less digits than its factorization.

26445021700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15817 (or 15810 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 31.

The spelling of 26445021700 in words is "twenty-six billion, four hundred forty-five million, twenty-one thousand, seven hundred".