20021009510 has 16 divisors (see below), whose sum is σ = 36068046336. Its totient is φ = 8001686208.

The previous prime is 20021009509. The next prime is 20021009537. The reversal of 20021009510 is 1590012002.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 827174 + ... + 851033.

It is an arithmetic number, because the mean of its divisors is an integer number (2254252896).

Almost surely, 2^20021009510 is an apocalyptic number.

20021009510 is a deficient number, since it is larger than the sum of its proper divisors (16047036826).

20021009510 is a wasteful number, since it uses less digits than its factorization.

20021009510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1679407.

The product of its (nonzero) digits is 180, while the sum is 20.

The spelling of 20021009510 in words is "twenty billion, twenty-one million, nine thousand, five hundred ten".