78298240931 has 8 divisors (see below), whose sum is σ = 83148576720. Its totient is φ = 73520842752.

The previous prime is 78298240921. The next prime is 78298240957. The reversal of 78298240931 is 13904289287.

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

It is a cyclic number.

It is not a de Polignac number, because 78298240931 - 2²² = 78294046627 is a prime.

It is a super-2 number, since 2×78298240931² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78298240921) 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, 18232190 + ... + 18236483.

It is an arithmetic number, because the mean of its divisors is an integer number (10393572090).

Almost surely, 2^78298240931 is an apocalyptic number.

78298240931 is a deficient number, since it is larger than the sum of its proper divisors (4850335789).

78298240931 is a wasteful number, since it uses less digits than its factorization.

78298240931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36468805.

The product of its (nonzero) digits is 1741824, while the sum is 53.

The spelling of 78298240931 in words is "seventy-eight billion, two hundred ninety-eight million, two hundred forty thousand, nine hundred thirty-one".