21997203343374 has 32 divisors (see below), whose sum is σ = 50286685201920. Its totient is φ = 6283994831712.

The previous prime is 21997203343363. The next prime is 21997203343421. The reversal of 21997203343374 is 47334330279912.

It is a super-3 number, since 3×21997203343374³ (a number of 41 digits) contains 333 as substring.

It is a congruent 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, 38060154 + ... + 38633789.

It is an arithmetic number, because the mean of its divisors is an integer number (1571458912560).

Almost surely, 2^{21997203343374} is an apocalyptic number.

21997203343374 is an abundant number, since it is smaller than the sum of its proper divisors (28289481858546).

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

21997203343374 is a wasteful number, since it uses less digits than its factorization.

21997203343374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76700784.

The product of its (nonzero) digits is 20575296, while the sum is 57.

The spelling of 21997203343374 in words is "twenty-one trillion, nine hundred ninety-seven billion, two hundred three million, three hundred forty-three thousand, three hundred seventy-four".