20431451120252 has 24 divisors (see below), whose sum is σ = 36037878320640. Its totient is φ = 10134920275200.

The previous prime is 20431451120219. The next prime is 20431451120281. The reversal of 20431451120252 is 25202115413402.

It is a congruent number.

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, 13613024 + ... + 15039192.

It is an arithmetic number, because the mean of its divisors is an integer number (1501578263360).

Almost surely, 2^{20431451120252} is an apocalyptic number.

It is an amenable number.

20431451120252 is a deficient number, since it is larger than the sum of its proper divisors (15606427200388).

20431451120252 is a wasteful number, since it uses less digits than its factorization.

20431451120252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1454501 (or 1454499 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 32.

Adding to 20431451120252 its reverse (25202115413402), we get a palindrome (45633566533654).

The spelling of 20431451120252 in words is "twenty trillion, four hundred thirty-one billion, four hundred fifty-one million, one hundred twenty thousand, two hundred fifty-two".