21973425548194 has 32 divisors (see below), whose sum is σ = 34923516751872. Its totient is φ = 10354457880000.

The previous prime is 21973425548159. The next prime is 21973425548231. The reversal of 21973425548194 is 49184552437912.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28380402 + ... + 29144365.

It is an arithmetic number, because the mean of its divisors is an integer number (1091359898496).

Almost surely, 2^{21973425548194} is an apocalyptic number.

21973425548194 is a deficient number, since it is larger than the sum of its proper divisors (12950091203678).

21973425548194 is a wasteful number, since it uses less digits than its factorization.

21973425548194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57524962.

The product of its digits is 87091200, while the sum is 64.

The spelling of 21973425548194 in words is "twenty-one trillion, nine hundred seventy-three billion, four hundred twenty-five million, five hundred forty-eight thousand, one hundred ninety-four".