20547974360 has 64 divisors (see below), whose sum is σ = 47867306400. Its totient is φ = 7929112576.

The previous prime is 20547974357. The next prime is 20547974371. The reversal of 20547974360 is 6347974502.

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, 1509344 + ... + 1522896.

Almost surely, 2^20547974360 is an apocalyptic number.

20547974360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20547974360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23933653200).

20547974360 is an abundant number, since it is smaller than the sum of its proper divisors (27319332040).

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

20547974360 is a wasteful number, since it uses less digits than its factorization.

20547974360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14900 (or 14896 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 47.

The spelling of 20547974360 in words is "twenty billion, five hundred forty-seven million, nine hundred seventy-four thousand, three hundred sixty".