26450434660 has 96 divisors (see below), whose sum is σ = 63130314240. Its totient is φ = 9228307968.

The previous prime is 26450434627. The next prime is 26450434687. The reversal of 26450434660 is 6643405462.

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, 1954437 + ... + 1967923.

It is an arithmetic number, because the mean of its divisors is an integer number (657607440).

Almost surely, 2^26450434660 is an apocalyptic number.

26450434660 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 26450434660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31565157120).

26450434660 is an abundant number, since it is smaller than the sum of its proper divisors (36679879580).

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

26450434660 is a wasteful number, since it uses less digits than its factorization.

26450434660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13925 (or 13923 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 40.

The spelling of 26450434660 in words is "twenty-six billion, four hundred fifty million, four hundred thirty-four thousand, six hundred sixty".