20087685617702 has 16 divisors (see below), whose sum is σ = 31930266798000. Its totient is φ = 9451358966880.

The previous prime is 20087685617693. The next prime is 20087685617729. The reversal of 20087685617702 is 20771658678002.

It is a super-2 number, since 2×20087685617702² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1773898049 + ... + 1773909372.

It is an arithmetic number, because the mean of its divisors is an integer number (1995641674875).

Almost surely, 2^{20087685617702} is an apocalyptic number.

20087685617702 is a deficient number, since it is larger than the sum of its proper divisors (11842581180298).

20087685617702 is a wasteful number, since it uses less digits than its factorization.

20087685617702 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3547807591.

The product of its (nonzero) digits is 15805440, while the sum is 59.

The spelling of 20087685617702 in words is "twenty trillion, eighty-seven billion, six hundred eighty-five million, six hundred seventeen thousand, seven hundred two".