20091009102 has 32 divisors (see below), whose sum is σ = 41967504000. Its totient is φ = 6405558048.

The previous prime is 20091009101. The next prime is 20091009143. The reversal of 20091009102 is 20190019002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20091009101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 753852 + ... + 780047.

It is an arithmetic number, because the mean of its divisors is an integer number (1311484500).

Almost surely, 2^20091009102 is an apocalyptic number.

20091009102 is an abundant number, since it is smaller than the sum of its proper divisors (21876494898).

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

20091009102 is a wasteful number, since it uses less digits than its factorization.

20091009102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1534000.

The product of its (nonzero) digits is 324, while the sum is 24.

The spelling of 20091009102 in words is "twenty billion, ninety-one million, nine thousand, one hundred two".