20454455536 has 10 divisors (see below), whose sum is σ = 39630507632. Its totient is φ = 10227227760.

The previous prime is 20454455521. The next prime is 20454455569. The reversal of 20454455536 is 63555445402.

It is a junction number, because it is equal to n+sod(n) for n = 20454455492 and 20454455501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 639201720 + ... + 639201751.

Almost surely, 2^20454455536 is an apocalyptic number.

It is an amenable number.

20454455536 is a deficient number, since it is larger than the sum of its proper divisors (19176052096).

20454455536 is a wasteful number, since it uses less digits than its factorization.

20454455536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1278403479 (or 1278403473 counting only the distinct ones).

The product of its (nonzero) digits is 1440000, while the sum is 43.

The spelling of 20454455536 in words is "twenty billion, four hundred fifty-four million, four hundred fifty-five thousand, five hundred thirty-six".