26809477696 has 63 divisors (see below), whose sum is σ = 54010132137. Its totient is φ = 13203671040.

The previous prime is 26809477657. The next prime is 26809477703. The reversal of 26809477696 is 69677490862.

The square root of 26809477696 is 163736.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 12038478400 + 14770999296 = 109720^2 + 121536^2 .

It is a Harshad number since it is a multiple of its sum of digits (64).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 127059031 + ... + 127059241.

Almost surely, 2^26809477696 is an apocalyptic number.

26809477696 is the 163736-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26809477696

26809477696 is an abundant number, since it is smaller than the sum of its proper divisors (27200654441).

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

26809477696 is an frugal number, since it uses more digits than its factorization.

26809477696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628 (or 310 counting only the distinct ones).

The product of its (nonzero) digits is 54867456, while the sum is 64.

Multiplying 26809477696 by its sum of digits (64), we get a square (1715806572544 = 1309888²).

26809477696 divided by its sum of digits (64) gives a square (418898089 = 20467²).

The spelling of 26809477696 in words is "twenty-six billion, eight hundred nine million, four hundred seventy-seven thousand, six hundred ninety-six".