20402300320402 has 32 divisors (see below), whose sum is σ = 41089947502464. Its totient is φ = 7337490624000.

The previous prime is 20402300320393. The next prime is 20402300320417.

20402300320402 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5095477599 + ... + 5095481602.

It is an arithmetic number, because the mean of its divisors is an integer number (1284060859452).

Almost surely, 2^{20402300320402} is an apocalyptic number.

20402300320402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20402300320402 is an abundant number, since it is smaller than the sum of its proper divisors (20687647182062).

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

20402300320402 is a wasteful number, since it uses less digits than its factorization.

20402300320402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10190959234.

The product of its (nonzero) digits is 2304, while the sum is 22.

It can be divided in two parts, 20402300 and 320402, that added together give a palindrome (20722702).

The spelling of 20402300320402 in words is "twenty trillion, four hundred two billion, three hundred million, three hundred twenty thousand, four hundred two".