20013340863890 has 32 divisors (see below), whose sum is σ = 39300481376640. Its totient is φ = 7277290070400.

The previous prime is 20013340863823. The next prime is 20013340863899. The reversal of 20013340863890 is 9836804331002.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20013340863899) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 807350 + ... + 6377969.

It is an arithmetic number, because the mean of its divisors is an integer number (1228140043020).

Almost surely, 2^{20013340863890} is an apocalyptic number.

20013340863890 is a deficient number, since it is larger than the sum of its proper divisors (19287140512750).

20013340863890 is a wasteful number, since it uses less digits than its factorization.

20013340863890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7210658.

The product of its (nonzero) digits is 746496, while the sum is 47.

The spelling of 20013340863890 in words is "twenty trillion, thirteen billion, three hundred forty million, eight hundred sixty-three thousand, eight hundred ninety".