68893182644 has 96 divisors (see below), whose sum is σ = 143958581760. Its totient is φ = 28435276800.

The previous prime is 68893182643. The next prime is 68893182749. The reversal of 68893182644 is 44628139886.

It is a happy number.

It is a super-2 number, since 2×68893182644² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68893182643) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17577317 + ... + 17581235.

It is an arithmetic number, because the mean of its divisors is an integer number (1499568560).

Almost surely, 2^68893182644 is an apocalyptic number.

It is an amenable number.

68893182644 is an abundant number, since it is smaller than the sum of its proper divisors (75065399116).

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

68893182644 is a wasteful number, since it uses less digits than its factorization.

68893182644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4441 (or 4439 counting only the distinct ones).

The product of its digits is 15925248, while the sum is 59.

The spelling of 68893182644 in words is "sixty-eight billion, eight hundred ninety-three million, one hundred eighty-two thousand, six hundred forty-four".