26397632400 has 60 divisors (see below), whose sum is σ = 84560419632. Its totient is φ = 7039368320.

The previous prime is 26397632383. The next prime is 26397632407. The reversal of 26397632400 is 423679362.

It is a tau number, because it is divible by the number of its divisors (60).

It is not an unprimeable number, because it can be changed into a prime (26397632407) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10997814 + ... + 11000213.

Almost surely, 2^26397632400 is an apocalyptic number.

26397632400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26397632400 is an abundant number, since it is smaller than the sum of its proper divisors (58162787232).

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

26397632400 is a wasteful number, since it uses less digits than its factorization.

26397632400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21998048 (or 21998037 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 42.

The spelling of 26397632400 in words is "twenty-six billion, three hundred ninety-seven million, six hundred thirty-two thousand, four hundred".