20312054455 has 16 divisors (see below), whose sum is σ = 30388944384. Its totient is φ = 12662059680.

The previous prime is 20312054449. The next prime is 20312054473. The reversal of 20312054455 is 55445021302.

It is not a de Polignac number, because 20312054455 - 2³ = 20312054447 is a prime.

It is a Duffinian number.

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, 26378907 + ... + 26379676.

It is an arithmetic number, because the mean of its divisors is an integer number (1899309024).

Almost surely, 2^20312054455 is an apocalyptic number.

20312054455 is a deficient number, since it is larger than the sum of its proper divisors (10076889929).

20312054455 is a wasteful number, since it uses less digits than its factorization.

20312054455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52758606.

The product of its (nonzero) digits is 24000, while the sum is 31.

Adding to 20312054455 its reverse (55445021302), we get a palindrome (75757075757).

The spelling of 20312054455 in words is "twenty billion, three hundred twelve million, fifty-four thousand, four hundred fifty-five".