20403611630402 has 64 divisors (see below), whose sum is σ = 41093847244800. Its totient is φ = 7337737442880.

The previous prime is 20403611630393. The next prime is 20403611630453.

20403611630402 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 74014499 + ... + 74289657.

It is an arithmetic number, because the mean of its divisors is an integer number (642091363200).

Almost surely, 2^{20403611630402} is an apocalyptic number.

20403611630402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20403611630402 is an abundant number, since it is smaller than the sum of its proper divisors (20690235614398).

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

20403611630402 is a wasteful number, since it uses less digits than its factorization.

20403611630402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312231.

The product of its (nonzero) digits is 20736, while the sum is 32.

It can be divided in two parts, 2040361 and 1630402, that added together give a palindrome (3670763).

The spelling of 20403611630402 in words is "twenty trillion, four hundred three billion, six hundred eleven million, six hundred thirty thousand, four hundred two".