78143967548 has 48 divisors (see below), whose sum is σ = 141246993888. Its totient is φ = 37804800000.

The previous prime is 78143967511. The next prime is 78143967571. The reversal of 78143967548 is 84576934187.

It is a super-2 number, since 2×78143967548² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9916586 + ... + 9924462.

It is an arithmetic number, because the mean of its divisors is an integer number (2942645706).

Almost surely, 2^78143967548 is an apocalyptic number.

It is an amenable number.

78143967548 is a deficient number, since it is larger than the sum of its proper divisors (63103026340).

78143967548 is a wasteful number, since it uses less digits than its factorization.

78143967548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8414 (or 8412 counting only the distinct ones).

The product of its digits is 40642560, while the sum is 62.

The spelling of 78143967548 in words is "seventy-eight billion, one hundred forty-three million, nine hundred sixty-seven thousand, five hundred forty-eight".