20556614401142 has 4 divisors (see below), whose sum is σ = 30834921601716. Its totient is φ = 10278307200570.

The previous prime is 20556614401027. The next prime is 20556614401151. The reversal of 20556614401142 is 24110441665502.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20556614401142.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5139153600284 + ... + 5139153600287.

It is an arithmetic number, because the mean of its divisors is an integer number (7708730400429).

Almost surely, 2^{20556614401142} is an apocalyptic number.

20556614401142 is a deficient number, since it is larger than the sum of its proper divisors (10278307200574).

20556614401142 is a wasteful number, since it uses less digits than its factorization.

20556614401142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10278307200573.

The product of its (nonzero) digits is 230400, while the sum is 41.

The spelling of 20556614401142 in words is "twenty trillion, five hundred fifty-six billion, six hundred fourteen million, four hundred one thousand, one hundred forty-two".