20087685617701 has 16 divisors (see below), whose sum is σ = 21989134661760. Its totient is φ = 18239079481920.

The previous prime is 20087685617693. The next prime is 20087685617729. The reversal of 20087685617701 is 10771658678002.

It is a cyclic number.

It is not a de Polignac number, because 20087685617701 - 2³ = 20087685617693 is a prime.

It is a super-2 number, since 2×20087685617701² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20087685617771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40401265 + ... + 40895446.

It is an arithmetic number, because the mean of its divisors is an integer number (1374320916360).

Almost surely, 2^{20087685617701} is an apocalyptic number.

It is an amenable number.

20087685617701 is a deficient number, since it is larger than the sum of its proper divisors (1901449044059).

20087685617701 is a wasteful number, since it uses less digits than its factorization.

20087685617701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81297036.

The product of its (nonzero) digits is 7902720, while the sum is 58.

The spelling of 20087685617701 in words is "twenty trillion, eighty-seven billion, six hundred eighty-five million, six hundred seventeen thousand, seven hundred one".