20420244202402 has 32 divisors (see below), whose sum is σ = 33425945970048. Its totient is φ = 9278874000000.

The previous prime is 20420244202399. The next prime is 20420244202447.

20420244202402 is nontrivially palindromic in base 10.

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, 1339815502 + ... + 1339830742.

It is an arithmetic number, because the mean of its divisors is an integer number (1044560811564).

Almost surely, 2^{20420244202402} is an apocalyptic number.

20420244202402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20420244202402 is a deficient number, since it is larger than the sum of its proper divisors (13005701767646).

20420244202402 is a wasteful number, since it uses less digits than its factorization.

20420244202402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31306.

The product of its (nonzero) digits is 16384, while the sum is 28.

It can be divided in two parts, 2042024 and 4202402, that added together give a palindrome (6244426).

The spelling of 20420244202402 in words is "twenty trillion, four hundred twenty billion, two hundred forty-four million, two hundred two thousand, four hundred two".