20217515682192 has 80 divisors (see below), whose sum is σ = 54390485119488. Its totient is φ = 6464064337920.

The previous prime is 20217515682179. The next prime is 20217515682197. The reversal of 20217515682192 is 29128651571202.

It is a super-2 number, since 2×20217515682192² (a number of 27 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (20217515682197) 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, 59951503 + ... + 60287790.

Almost surely, 2^{20217515682192} is an apocalyptic number.

It is an amenable number.

20217515682192 is an abundant number, since it is smaller than the sum of its proper divisors (34172969437296).

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

20217515682192 is a wasteful number, since it uses less digits than its factorization.

20217515682192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120239448 (or 120239442 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 51.

The spelling of 20217515682192 in words is "twenty trillion, two hundred seventeen billion, five hundred fifteen million, six hundred eighty-two thousand, one hundred ninety-two".