26791646480 has 20 divisors (see below), whose sum is σ = 62290578252. Its totient is φ = 10716658560.

The previous prime is 26791646449. The next prime is 26791646501. The reversal of 26791646480 is 8464619762.

It can be written as a sum of positive squares in 2 ways, for example, as 5525840896 + 21265805584 = 74336^2 + 145828^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×26791646480² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (53) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167447711 + ... + 167447870.

Almost surely, 2^26791646480 is an apocalyptic number.

26791646480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26791646480 is an abundant number, since it is smaller than the sum of its proper divisors (35498931772).

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

26791646480 is a wasteful number, since it uses less digits than its factorization.

26791646480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334895594 (or 334895588 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 53.

The spelling of 26791646480 in words is "twenty-six billion, seven hundred ninety-one million, six hundred forty-six thousand, four hundred eighty".