21374326122366 has 64 divisors (see below), whose sum is σ = 48898410181632. Its totient is φ = 6101600389632.

The previous prime is 21374326122361. The next prime is 21374326122371. The reversal of 21374326122366 is 66322162347312.

It is an interprime number because it is at equal distance from previous prime (21374326122361) and next prime (21374326122371).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21374326122361) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 810941260 + ... + 810967616.

It is an arithmetic number, because the mean of its divisors is an integer number (764037659088).

Almost surely, 2^{21374326122366} is an apocalyptic number.

21374326122366 is an abundant number, since it is smaller than the sum of its proper divisors (27524084059266).

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

21374326122366 is a wasteful number, since it uses less digits than its factorization.

21374326122366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42553.

The product of its digits is 2612736, while the sum is 48.

Adding to 21374326122366 its reverse (66322162347312), we get a palindrome (87696488469678).

The spelling of 21374326122366 in words is "twenty-one trillion, three hundred seventy-four billion, three hundred twenty-six million, one hundred twenty-two thousand, three hundred sixty-six".