78242599344 has 160 divisors (see below), whose sum is σ = 248889070080. Its totient is φ = 20625647616.

The previous prime is 78242599333. The next prime is 78242599411. The reversal of 78242599344 is 44399524287.

It is a happy number.

It is a super-2 number, since 2×78242599344² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17552764 + ... + 17557220.

It is an arithmetic number, because the mean of its divisors is an integer number (1555556688).

Almost surely, 2^78242599344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78242599344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124444535040).

78242599344 is an abundant number, since it is smaller than the sum of its proper divisors (170646470736).

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

78242599344 is a wasteful number, since it uses less digits than its factorization.

78242599344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8507 (or 8501 counting only the distinct ones).

The product of its digits is 17418240, while the sum is 57.

The spelling of 78242599344 in words is "seventy-eight billion, two hundred forty-two million, five hundred ninety-nine thousand, three hundred forty-four".