20168520020 has 48 divisors (see below), whose sum is σ = 47694721536. Its totient is φ = 7097424000.

The previous prime is 20168520019. The next prime is 20168520037. The reversal of 20168520020 is 2002586102.

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, 1471811 + ... + 1485450.

It is an arithmetic number, because the mean of its divisors is an integer number (993640032).

Almost surely, 2^20168520020 is an apocalyptic number.

20168520020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20168520020 is an abundant number, since it is smaller than the sum of its proper divisors (27526201516).

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

20168520020 is a wasteful number, since it uses less digits than its factorization.

20168520020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2957312 (or 2957310 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The spelling of 20168520020 in words is "twenty billion, one hundred sixty-eight million, five hundred twenty thousand, twenty".