67647065983 has 12 divisors (see below), whose sum is σ = 80521521960. Its totient is φ = 56634751152.

The previous prime is 67647065971. The next prime is 67647065987. The reversal of 67647065983 is 38956074676.

It is not a de Polignac number, because 67647065983 - 2¹⁷ = 67646934911 is a prime.

It is a super-2 number, since 2×67647065983² (a number of 22 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 (67647065987) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16050828 + ... + 16055041.

It is an arithmetic number, because the mean of its divisors is an integer number (6710126830).

Almost surely, 2^67647065983 is an apocalyptic number.

67647065983 is a deficient number, since it is larger than the sum of its proper divisors (12874455977).

67647065983 is a wasteful number, since it uses less digits than its factorization.

67647065983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32105926 (or 32105919 counting only the distinct ones).

The product of its (nonzero) digits is 45722880, while the sum is 61.

The spelling of 67647065983 in words is "sixty-seven billion, six hundred forty-seven million, sixty-five thousand, nine hundred eighty-three".