20612131402142 has 32 divisors (see below), whose sum is σ = 36554765529600. Its totient is φ = 8528870353248.

The previous prime is 20612131402133. The next prime is 20612131402153. The reversal of 20612131402142 is 24120413121602.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11421959 + ... + 13102877.

It is an arithmetic number, because the mean of its divisors is an integer number (1142336422800).

Almost surely, 2^{20612131402142} is an apocalyptic number.

20612131402142 is a deficient number, since it is larger than the sum of its proper divisors (15942634127458).

20612131402142 is a wasteful number, since it uses less digits than its factorization.

20612131402142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1711160.

The product of its (nonzero) digits is 4608, while the sum is 29.

Adding to 20612131402142 its reverse (24120413121602), we get a palindrome (44732544523744).

The spelling of 20612131402142 in words is "twenty trillion, six hundred twelve billion, one hundred thirty-one million, four hundred two thousand, one hundred forty-two".