78332223387 has 24 divisors (see below), whose sum is σ = 116967028752. Its totient is φ = 46578326080.

The previous prime is 78332223383. The next prime is 78332223439.

78332223387 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 78332223387 - 2² = 78332223383 is a prime.

It is a super-2 number, since 2×78332223387² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78332223383) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2016528 + ... + 2055005.

It is an arithmetic number, because the mean of its divisors is an integer number (4873626198).

Almost surely, 2^78332223387 is an apocalyptic number.

78332223387 is a deficient number, since it is larger than the sum of its proper divisors (38634805365).

78332223387 is a wasteful number, since it uses less digits than its factorization.

78332223387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4071611 (or 4071600 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 48.

The spelling of 78332223387 in words is "seventy-eight billion, three hundred thirty-two million, two hundred twenty-three thousand, three hundred eighty-seven".