20454461406 has 48 divisors (see below), whose sum is σ = 44708274000. Its totient is φ = 6758262144.

The previous prime is 20454461389. The next prime is 20454461449. The reversal of 20454461406 is 60416445402.

20454461406 is a `hidden beast` number, since 20 + 454 + 46 + 140 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1742545 + ... + 1754243.

It is an arithmetic number, because the mean of its divisors is an integer number (931422375).

Almost surely, 2^20454461406 is an apocalyptic number.

20454461406 is an abundant number, since it is smaller than the sum of its proper divisors (24253812594).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20454461406 is a wasteful number, since it uses less digits than its factorization.

20454461406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12553 (or 12550 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 36.

The spelling of 20454461406 in words is "twenty billion, four hundred fifty-four million, four hundred sixty-one thousand, four hundred six".