20185670819512 has 32 divisors (see below), whose sum is σ = 41314094705520. Its totient is φ = 9169699901440.

The previous prime is 20185670819497. The next prime is 20185670819557. The reversal of 20185670819512 is 21591807658102.

It is a super-2 number, since 2×20185670819512² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69917833 + ... + 70205944.

Almost surely, 2^{20185670819512} is an apocalyptic number.

20185670819512 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20185670819512 is an abundant number, since it is smaller than the sum of its proper divisors (21128423886008).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20185670819512 is a wasteful number, since it uses less digits than its factorization.

20185670819512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140125431 (or 140125427 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 55.

The spelling of 20185670819512 in words is "twenty trillion, one hundred eighty-five billion, six hundred seventy million, eight hundred nineteen thousand, five hundred twelve".