20402422420402 has 16 divisors (see below), whose sum is σ = 33386377492800. Its totient is φ = 9273662997840.

The previous prime is 20402422420379. The next prime is 20402422420411.

20402422420402 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7002702 + ... + 9478537.

It is an arithmetic number, because the mean of its divisors is an integer number (2086648593300).

Almost surely, 2^{20402422420402} is an apocalyptic number.

20402422420402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20402422420402 is a deficient number, since it is larger than the sum of its proper divisors (12983955072398).

20402422420402 is a wasteful number, since it uses less digits than its factorization.

20402422420402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16537521.

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

It can be divided in two parts, 2040242 and 2420402, that added together give a palindrome (4460644).

The spelling of 20402422420402 in words is "twenty trillion, four hundred two billion, four hundred twenty-two million, four hundred twenty thousand, four hundred two".