78325277808 has 40 divisors (see below), whose sum is σ = 202531139856. Its totient is φ = 26083801600.

The previous prime is 78325277783. The next prime is 78325277809. The reversal of 78325277808 is 80877252387.

It is a super-2 number, since 2×78325277808² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78325277809) 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, 718053 + ... + 819908.

Almost surely, 2^78325277808 is an apocalyptic number.

It is an amenable number.

78325277808 is an abundant number, since it is smaller than the sum of its proper divisors (124205862048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78325277808 is a wasteful number, since it uses less digits than its factorization.

78325277808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1539033 (or 1539027 counting only the distinct ones).

The product of its (nonzero) digits is 10536960, while the sum is 57.

The spelling of 78325277808 in words is "seventy-eight billion, three hundred twenty-five million, two hundred seventy-seven thousand, eight hundred eight".