68764063644 has 48 divisors (see below), whose sum is σ = 182625438240. Its totient is φ = 22362295680.

The previous prime is 68764063637. The next prime is 68764063747. The reversal of 68764063644 is 44636046786.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 7760259 + ... + 7769114.

It is an arithmetic number, because the mean of its divisors is an integer number (3804696630).

Almost surely, 2^68764063644 is an apocalyptic number.

It is an amenable number.

68764063644 is an abundant number, since it is smaller than the sum of its proper divisors (113861374596).

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

68764063644 is a wasteful number, since it uses less digits than its factorization.

68764063644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15529427 (or 15529419 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 54.

The spelling of 68764063644 in words is "sixty-eight billion, seven hundred sixty-four million, sixty-three thousand, six hundred forty-four".