78922222987 has 8 divisors (see below), whose sum is σ = 79025836032. Its totient is φ = 78818649000.

The previous prime is 78922222963. The next prime is 78922222997.

78922222987 is nontrivially palindromic in base 10.

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 78922222987 - 2¹¹ = 78922220939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78922222997) 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, 8331828 + ... + 8341294.

It is an arithmetic number, because the mean of its divisors is an integer number (9878229504).

Almost surely, 2^78922222987 is an apocalyptic number.

78922222987 is a deficient number, since it is larger than the sum of its proper divisors (103613045).

78922222987 is an equidigital number, since it uses as much as digits as its factorization.

78922222987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19529.

The product of its digits is 8128512, while the sum is 58.

The spelling of 78922222987 in words is "seventy-eight billion, nine hundred twenty-two million, two hundred twenty-two thousand, nine hundred eighty-seven".