20034453552440 has 64 divisors (see below), whose sum is σ = 46648843349760. Its totient is φ = 7735737461760.

The previous prime is 20034453552431. The next prime is 20034453552457. The reversal of 20034453552440 is 4425535443002.

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, 19856357 + ... + 20840916.

It is an arithmetic number, because the mean of its divisors is an integer number (728888177340).

Almost surely, 2^{20034453552440} is an apocalyptic number.

20034453552440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20034453552440 is an abundant number, since it is smaller than the sum of its proper divisors (26614389797320).

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

20034453552440 is a wasteful number, since it uses less digits than its factorization.

20034453552440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40697712 (or 40697708 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 41.

Adding to 20034453552440 its reverse (4425535443002), we get a palindrome (24459988995442).

The spelling of 20034453552440 in words is "twenty trillion, thirty-four billion, four hundred fifty-three million, five hundred fifty-two thousand, four hundred forty".