20436555563402 has 32 divisors (see below), whose sum is σ = 33708325742784. Its totient is φ = 9215311081600.

The previous prime is 20436555563377. The next prime is 20436555563441.

It is a happy number.

20436555563402 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, 7323038 + ... + 9721110.

It is an arithmetic number, because the mean of its divisors is an integer number (1053385179462).

Almost surely, 2^{20436555563402} is an apocalyptic number.

20436555563402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20436555563402 is a deficient number, since it is larger than the sum of its proper divisors (13271770179382).

20436555563402 is a wasteful number, since it uses less digits than its factorization.

20436555563402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2401174.

The product of its (nonzero) digits is 12960000, while the sum is 50.

The spelling of 20436555563402 in words is "twenty trillion, four hundred thirty-six billion, five hundred fifty-five million, five hundred sixty-three thousand, four hundred two".