20165353902 has 24 divisors (see below), whose sum is σ = 43695690480. Its totient is φ = 6721155360.

The previous prime is 20165353889. The next prime is 20165353909. The reversal of 20165353902 is 20935356102.

20165353902 is a `hidden beast` number, since 20 + 16 + 535 + 3 + 90 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20165353909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 170874 + ... + 263682.

It is an arithmetic number, because the mean of its divisors is an integer number (1820653770).

Almost surely, 2^20165353902 is an apocalyptic number.

20165353902 is an abundant number, since it is smaller than the sum of its proper divisors (23530336578).

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

20165353902 is a wasteful number, since it uses less digits than its factorization.

20165353902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104888 (or 104885 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 36.

The spelling of 20165353902 in words is "twenty billion, one hundred sixty-five million, three hundred fifty-three thousand, nine hundred two".