26991490168600 has 48 divisors (see below), whose sum is σ = 66446697864600. Its totient is φ = 10161502179840.

The previous prime is 26991490168553. The next prime is 26991490168633. The reversal of 26991490168600 is 686109419962.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3969333390 + ... + 3969340189.

Almost surely, 2^{26991490168600} is an apocalyptic number.

26991490168600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26991490168600 is an abundant number, since it is smaller than the sum of its proper divisors (39455207696000).

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

26991490168600 is a wasteful number, since it uses less digits than its factorization.

26991490168600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7938673612 (or 7938673603 counting only the distinct ones).

The product of its (nonzero) digits is 10077696, while the sum is 61.

The spelling of 26991490168600 in words is "twenty-six trillion, nine hundred ninety-one billion, four hundred ninety million, one hundred sixty-eight thousand, six hundred".