78298249967 has 8 divisors (see below), whose sum is σ = 89709117216. Its totient is φ = 66943733472.

The previous prime is 78298249921. The next prime is 78298249993. The reversal of 78298249967 is 76994289287.

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

It is not a de Polignac number, because 78298249967 - 2¹⁰ = 78298248943 is a prime.

It is a super-2 number, since 2×78298249967² (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 78298249967.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78298240967) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14084708 + ... + 14090265.

It is an arithmetic number, because the mean of its divisors is an integer number (11213639652).

Almost surely, 2^78298249967 is an apocalyptic number.

78298249967 is a deficient number, since it is larger than the sum of its proper divisors (11410867249).

78298249967 is a wasteful number, since it uses less digits than its factorization.

78298249967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28175377.

The product of its digits is 219469824, while the sum is 71.

The spelling of 78298249967 in words is "seventy-eight billion, two hundred ninety-eight million, two hundred forty-nine thousand, nine hundred sixty-seven".