20356453102 has 4 divisors (see below), whose sum is σ = 30534679656. Its totient is φ = 10178226550.

The previous prime is 20356453079. The next prime is 20356453151. The reversal of 20356453102 is 20135465302.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5089113274 + ... + 5089113277.

It is an arithmetic number, because the mean of its divisors is an integer number (7633669914).

Almost surely, 2^20356453102 is an apocalyptic number.

20356453102 is a deficient number, since it is larger than the sum of its proper divisors (10178226554).

20356453102 is a wasteful number, since it uses less digits than its factorization.

20356453102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10178226553.

The product of its (nonzero) digits is 21600, while the sum is 31.

The spelling of 20356453102 in words is "twenty billion, three hundred fifty-six million, four hundred fifty-three thousand, one hundred two".