20343774324432 has 80 divisors (see below), whose sum is σ = 56658348008640. Its totient is φ = 6252884668416.

The previous prime is 20343774324359. The next prime is 20343774324437. The reversal of 20343774324432 is 23442347734302.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20343774324437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16967238 + ... + 18126629.

It is an arithmetic number, because the mean of its divisors is an integer number (708229350108).

Almost surely, 2^{20343774324432} is an apocalyptic number.

It is an amenable number.

20343774324432 is an abundant number, since it is smaller than the sum of its proper divisors (36314573684208).

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

20343774324432 is a wasteful number, since it uses less digits than its factorization.

20343774324432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35094820 (or 35094814 counting only the distinct ones).

The product of its (nonzero) digits is 8128512, while the sum is 48.

The spelling of 20343774324432 in words is "twenty trillion, three hundred forty-three billion, seven hundred seventy-four million, three hundred twenty-four thousand, four hundred thirty-two".