67868511513 has 16 divisors (see below), whose sum is σ = 101902282752. Its totient is φ = 39805578000.

The previous prime is 67868511457. The next prime is 67868511517. The reversal of 67868511513 is 31511586876.

It is not a de Polignac number, because 67868511513 - 2²⁰ = 67867462937 is a prime.

It is a super-2 number, since 2×67868511513² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (67868511517) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33170293 + ... + 33172338.

It is an arithmetic number, because the mean of its divisors is an integer number (6368892672).

Almost surely, 2^67868511513 is an apocalyptic number.

It is an amenable number.

67868511513 is a deficient number, since it is larger than the sum of its proper divisors (34033771239).

67868511513 is a wasteful number, since it uses less digits than its factorization.

67868511513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66342676.

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

The spelling of 67868511513 in words is "sixty-seven billion, eight hundred sixty-eight million, five hundred eleven thousand, five hundred thirteen".