20023454101340 has 48 divisors (see below), whose sum is σ = 42847003654560. Its totient is φ = 7857460066560.

The previous prime is 20023454101333. The next prime is 20023454101477. The reversal of 20023454101340 is 4310145432002.

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, 9492530 + ... + 11408550.

It is an arithmetic number, because the mean of its divisors is an integer number (892645909470).

Almost surely, 2^{20023454101340} is an apocalyptic number.

20023454101340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20023454101340 is an abundant number, since it is smaller than the sum of its proper divisors (22823549553220).

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

20023454101340 is a wasteful number, since it uses less digits than its factorization.

20023454101340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1925942 (or 1925940 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 20023454101340 its reverse (4310145432002), we get a palindrome (24333599533342).

The spelling of 20023454101340 in words is "twenty trillion, twenty-three billion, four hundred fifty-four million, one hundred one thousand, three hundred forty".