78233567558 has 4 divisors (see below), whose sum is σ = 117350351340. Its totient is φ = 39116783778.

The previous prime is 78233567527. The next prime is 78233567653. The reversal of 78233567558 is 85576533287.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×78233567558² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78233567497 and 78233567506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19558391888 + ... + 19558391891.

It is an arithmetic number, because the mean of its divisors is an integer number (29337587835).

Almost surely, 2^78233567558 is an apocalyptic number.

78233567558 is a deficient number, since it is larger than the sum of its proper divisors (39116783782).

78233567558 is a wasteful number, since it uses less digits than its factorization.

78233567558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39116783781.

The product of its digits is 42336000, while the sum is 59.

The spelling of 78233567558 in words is "seventy-eight billion, two hundred thirty-three million, five hundred sixty-seven thousand, five hundred fifty-eight".