20302102091 has 8 divisors (see below), whose sum is σ = 21372045120. Its totient is φ = 19232300232.

The previous prime is 20302102069. The next prime is 20302102099. The reversal of 20302102091 is 19020120302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-20302102091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20302102099) 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 7 ways as a sum of consecutive naturals, for example, 393776 + ... + 442338.

It is an arithmetic number, because the mean of its divisors is an integer number (2671505640).

Almost surely, 2^20302102091 is an apocalyptic number.

20302102091 is a deficient number, since it is larger than the sum of its proper divisors (1069943029).

20302102091 is a wasteful number, since it uses less digits than its factorization.

20302102091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70585.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 20302102091 its reverse (19020120302), we get a palindrome (39322222393).

The spelling of 20302102091 in words is "twenty billion, three hundred two million, one hundred two thousand, ninety-one".