26123420721400 has 24 divisors (see below), whose sum is σ = 60736953177720. Its totient is φ = 10449368288480.

The previous prime is 26123420721383. The next prime is 26123420721421. The reversal of 26123420721400 is 412702432162.

It is a super-2 number, since 2×26123420721400² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 65308551604 + ... + 65308552003.

It is an arithmetic number, because the mean of its divisors is an integer number (2530706382405).

Almost surely, 2^{26123420721400} is an apocalyptic number.

26123420721400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26123420721400 is an abundant number, since it is smaller than the sum of its proper divisors (34613532456320).

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

26123420721400 is a wasteful number, since it uses less digits than its factorization.

26123420721400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130617103623 (or 130617103614 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 34.

The spelling of 26123420721400 in words is "twenty-six trillion, one hundred twenty-three billion, four hundred twenty million, seven hundred twenty-one thousand, four hundred".