20201687035142 has 4 divisors (see below), whose sum is σ = 30302530552716. Its totient is φ = 10100843517570.

The previous prime is 20201687035141. The next prime is 20201687035169. The reversal of 20201687035142 is 24153078610202.

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 20201687035142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20201687035141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5050421758784 + ... + 5050421758787.

It is an arithmetic number, because the mean of its divisors is an integer number (7575632638179).

Almost surely, 2^{20201687035142} is an apocalyptic number.

20201687035142 is a deficient number, since it is larger than the sum of its proper divisors (10100843517574).

20201687035142 is a wasteful number, since it uses less digits than its factorization.

20201687035142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10100843517573.

The product of its (nonzero) digits is 161280, while the sum is 41.

The spelling of 20201687035142 in words is "twenty trillion, two hundred one billion, six hundred eighty-seven million, thirty-five thousand, one hundred forty-two".