20453173716 has 12 divisors (see below), whose sum is σ = 47724072032. Its totient is φ = 6817724568.

The previous prime is 20453173691. The next prime is 20453173721. The reversal of 20453173716 is 61737135402.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 852215560 + ... + 852215583.

Almost surely, 2^20453173716 is an apocalyptic number.

It is an amenable number.

20453173716 is an abundant number, since it is smaller than the sum of its proper divisors (27270898316).

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

20453173716 is a wasteful number, since it uses less digits than its factorization.

20453173716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1704431150 (or 1704431148 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 39.

The spelling of 20453173716 in words is "twenty billion, four hundred fifty-three million, one hundred seventy-three thousand, seven hundred sixteen".