78355123148 has 12 divisors (see below), whose sum is σ = 137212224912. Its totient is φ = 39151630320.

The previous prime is 78355123117. The next prime is 78355123157. The reversal of 78355123148 is 84132155387.

It is a super-2 number, since 2×78355123148² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6476015 + ... + 6488102.

It is an arithmetic number, because the mean of its divisors is an integer number (11434352076).

Almost surely, 2^78355123148 is an apocalyptic number.

It is an amenable number.

78355123148 is a deficient number, since it is larger than the sum of its proper divisors (58857101764).

78355123148 is a wasteful number, since it uses less digits than its factorization.

78355123148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12965632 (or 12965630 counting only the distinct ones).

The product of its digits is 806400, while the sum is 47.

The spelling of 78355123148 in words is "seventy-eight billion, three hundred fifty-five million, one hundred twenty-three thousand, one hundred forty-eight".