78223178042507 has 8 divisors (see below), whose sum is σ = 80923357378800. Its totient is φ = 75523187264224.

The previous prime is 78223178042489. The next prime is 78223178042561. The reversal of 78223178042507 is 70524087132287.

It is a happy number.

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 78223178042507 - 2²² = 78223173848203 is a prime.

It is a super-2 number, since 2×78223178042507² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78223178842507) 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, 46295228 + ... + 47955129.

It is an arithmetic number, because the mean of its divisors is an integer number (10115419672350).

Almost surely, 2^{78223178042507} is an apocalyptic number.

78223178042507 is a deficient number, since it is larger than the sum of its proper divisors (2700179336293).

78223178042507 is a wasteful number, since it uses less digits than its factorization.

78223178042507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94279005.

The product of its (nonzero) digits is 10536960, while the sum is 56.

The spelling of 78223178042507 in words is "seventy-eight trillion, two hundred twenty-three billion, one hundred seventy-eight million, forty-two thousand, five hundred seven".