20123405504332 has 24 divisors (see below), whose sum is σ = 37925762720832. Its totient is φ = 9287509344000.

The previous prime is 20123405504311. The next prime is 20123405504351. The reversal of 20123405504332 is 23340550432102.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2240269 + ... + 6727972.

It is an arithmetic number, because the mean of its divisors is an integer number (1580240113368).

Almost surely, 2^{20123405504332} is an apocalyptic number.

It is an amenable number.

20123405504332 is a deficient number, since it is larger than the sum of its proper divisors (17802357216500).

20123405504332 is a wasteful number, since it uses less digits than its factorization.

20123405504332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9011409 (or 9011407 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 34.

Adding to 20123405504332 its reverse (23340550432102), we get a palindrome (43463955936434).

The spelling of 20123405504332 in words is "twenty trillion, one hundred twenty-three billion, four hundred five million, five hundred four thousand, three hundred thirty-two".