67977619992 has 48 divisors (see below), whose sum is σ = 184123836000. Its totient is φ = 22657018176.

The previous prime is 67977619973. The next prime is 67977620033. The reversal of 67977619992 is 29991677976.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a self number, because there is not a number n which added to its sum of digits gives 67977619992.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 817809 + ... + 897087.

It is an arithmetic number, because the mean of its divisors is an integer number (3835913250).

Almost surely, 2^67977619992 is an apocalyptic number.

It is an amenable number.

67977619992 is an abundant number, since it is smaller than the sum of its proper divisors (116146216008).

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

67977619992 is a wasteful number, since it uses less digits than its factorization.

67977619992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91200 (or 91193 counting only the distinct ones).

The product of its digits is 162030456, while the sum is 72.

The spelling of 67977619992 in words is "sixty-seven billion, nine hundred seventy-seven million, six hundred nineteen thousand, nine hundred ninety-two".