67640286516 has 48 divisors (see below), whose sum is σ = 174997841088. Its totient is φ = 20161036800.

The previous prime is 67640286509. The next prime is 67640286521. The reversal of 67640286516 is 61568204676.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4192165 + ... + 4208268.

It is an arithmetic number, because the mean of its divisors is an integer number (3645788356).

Almost surely, 2^67640286516 is an apocalyptic number.

67640286516 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

67640286516 is an abundant number, since it is smaller than the sum of its proper divisors (107357554572).

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

67640286516 is a wasteful number, since it uses less digits than its factorization.

67640286516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8400512 (or 8400510 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 51.

The spelling of 67640286516 in words is "sixty-seven billion, six hundred forty million, two hundred eighty-six thousand, five hundred sixteen".