26198400920 has 16 divisors (see below), whose sum is σ = 58946402160. Its totient is φ = 10479360352.

The previous prime is 26198400913. The next prime is 26198400947. The reversal of 26198400920 is 2900489162.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 327479972 + ... + 327480051.

It is an arithmetic number, because the mean of its divisors is an integer number (3684150135).

Almost surely, 2^26198400920 is an apocalyptic number.

26198400920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26198400920 is an abundant number, since it is smaller than the sum of its proper divisors (32748001240).

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

26198400920 is a wasteful number, since it uses less digits than its factorization.

26198400920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654960034 (or 654960030 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 41.

The spelling of 26198400920 in words is "twenty-six billion, one hundred ninety-eight million, four hundred thousand, nine hundred twenty".