78298384157 has 8 divisors (see below), whose sum is σ = 89538879936. Its totient is φ = 67071641472.

The previous prime is 78298384127. The next prime is 78298384181. The reversal of 78298384157 is 75148389287.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78298384157 is a prime.

It is a super-2 number, since 2×78298384157² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78298384157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78298384127) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3426068 + ... + 3448845.

It is an arithmetic number, because the mean of its divisors is an integer number (11192359992).

Almost surely, 2^78298384157 is an apocalyptic number.

It is an amenable number.

78298384157 is a deficient number, since it is larger than the sum of its proper divisors (11240495779).

78298384157 is a wasteful number, since it uses less digits than its factorization.

78298384157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6876547.

The product of its digits is 27095040, while the sum is 62.

The spelling of 78298384157 in words is "seventy-eight billion, two hundred ninety-eight million, three hundred eighty-four thousand, one hundred fifty-seven".