20455074512 has 10 divisors (see below), whose sum is σ = 39631706898. Its totient is φ = 10227537248.

The previous prime is 20455074499. The next prime is 20455074527. The reversal of 20455074512 is 21547055402.

It can be written as a sum of positive squares in only one way, i.e., 19361052736 + 1094021776 = 139144^2 + 33076^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 639221063 + ... + 639221094.

Almost surely, 2^20455074512 is an apocalyptic number.

It is an amenable number.

20455074512 is a deficient number, since it is larger than the sum of its proper divisors (19176632386).

20455074512 is a wasteful number, since it uses less digits than its factorization.

20455074512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1278442165 (or 1278442159 counting only the distinct ones).

The product of its (nonzero) digits is 56000, while the sum is 35.

The spelling of 20455074512 in words is "twenty billion, four hundred fifty-five million, seventy-four thousand, five hundred twelve".