20587963289311 has 16 divisors (see below), whose sum is σ = 23022100297728. Its totient is φ = 18250515842400.

The previous prime is 20587963289297. The next prime is 20587963289359. The reversal of 20587963289311 is 11398236978502.

It is a cyclic number.

It is not a de Polignac number, because 20587963289311 - 2²⁷ = 20587829071583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20587963289711) 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, 73332180 + ... + 73612393.

It is an arithmetic number, because the mean of its divisors is an integer number (1438881268608).

Almost surely, 2^{20587963289311} is an apocalyptic number.

20587963289311 is a deficient number, since it is larger than the sum of its proper divisors (2434137008417).

20587963289311 is a wasteful number, since it uses less digits than its factorization.

20587963289311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146944902.

The product of its (nonzero) digits is 39191040, while the sum is 64.

The spelling of 20587963289311 in words is "twenty trillion, five hundred eighty-seven billion, nine hundred sixty-three million, two hundred eighty-nine thousand, three hundred eleven".