67820788749 has 64 divisors (see below), whose sum is σ = 108724469760. Its totient is φ = 36789120000.

The previous prime is 67820788741. The next prime is 67820788769. The reversal of 67820788749 is 94788702876.

It is not a de Polignac number, because 67820788749 - 2³ = 67820788741 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 67820788749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67820788741) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15921982 + ... + 15926240.

It is an arithmetic number, because the mean of its divisors is an integer number (1698819840).

Almost surely, 2^67820788749 is an apocalyptic number.

It is an amenable number.

67820788749 is a deficient number, since it is larger than the sum of its proper divisors (40903681011).

67820788749 is a wasteful number, since it uses less digits than its factorization.

67820788749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4762.

The product of its (nonzero) digits is 75866112, while the sum is 66.

The spelling of 67820788749 in words is "sixty-seven billion, eight hundred twenty million, seven hundred eighty-eight thousand, seven hundred forty-nine".