20403400430402 has 32 divisors (see below), whose sum is σ = 33954370560000. Its totient is φ = 9116786434000.

The previous prime is 20403400430363. The next prime is 20403400430437.

20403400430402 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, 42594527 + ... + 43070877.

It is an arithmetic number, because the mean of its divisors is an integer number (1061074080000).

Almost surely, 2^{20403400430402} is an apocalyptic number.

20403400430402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20403400430402 is a deficient number, since it is larger than the sum of its proper divisors (13550970129598).

20403400430402 is a wasteful number, since it uses less digits than its factorization.

20403400430402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509422.

The product of its (nonzero) digits is 9216, while the sum is 26.

It can be divided in two parts, 20403400 and 430402, that added together give a palindrome (20833802).

The spelling of 20403400430402 in words is "twenty trillion, four hundred three billion, four hundred million, four hundred thirty thousand, four hundred two".