78280255499 has 8 divisors (see below), whose sum is σ = 78419504640. Its totient is φ = 78141125736.

The previous prime is 78280255489. The next prime is 78280255549. The reversal of 78280255499 is 99455208287.

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 78280255499 - 2⁸ = 78280255243 is a prime.

It is a super-2 number, since 2×78280255499² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78280255489) 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, 1337912 + ... + 1395194.

It is an arithmetic number, because the mean of its divisors is an integer number (9802438080).

Almost surely, 2^78280255499 is an apocalyptic number.

78280255499 is a deficient number, since it is larger than the sum of its proper divisors (139249141).

78280255499 is a wasteful number, since it uses less digits than its factorization.

78280255499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59689.

The product of its (nonzero) digits is 14515200, while the sum is 59.

The spelling of 78280255499 in words is "seventy-eight billion, two hundred eighty million, two hundred fifty-five thousand, four hundred ninety-nine".