20023274217340 has 24 divisors (see below), whose sum is σ = 42061810128912. Its totient is φ = 8006846016000.

The previous prime is 20023274217257. The next prime is 20023274217343. The reversal of 20023274217340 is 4371247232002.

It is a self number, because there is not a number n which added to its sum of digits gives 20023274217340.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20023274217343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153912789 + ... + 154042828.

It is an arithmetic number, because the mean of its divisors is an integer number (1752575422038).

Almost surely, 2^{20023274217340} is an apocalyptic number.

20023274217340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20023274217340 is an abundant number, since it is smaller than the sum of its proper divisors (22038535911572).

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

20023274217340 is a wasteful number, since it uses less digits than its factorization.

20023274217340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307958877 (or 307958875 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 37.

The spelling of 20023274217340 in words is "twenty trillion, twenty-three billion, two hundred seventy-four million, two hundred seventeen thousand, three hundred forty".