78457547208 has 16 divisors (see below), whose sum is σ = 196143868080. Its totient is φ = 26152515728.

The previous prime is 78457547197. The next prime is 78457547219. The reversal of 78457547208 is 80274575487.

It is an interprime number because it is at equal distance from previous prime (78457547197) and next prime (78457547219).

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, 1634532210 + ... + 1634532257.

It is an arithmetic number, because the mean of its divisors is an integer number (12258991755).

Almost surely, 2^78457547208 is an apocalyptic number.

It is an amenable number.

78457547208 is an abundant number, since it is smaller than the sum of its proper divisors (117686320872).

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

78457547208 is a wasteful number, since it uses less digits than its factorization.

78457547208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3269064476 (or 3269064472 counting only the distinct ones).

The product of its (nonzero) digits is 17561600, while the sum is 57.

The spelling of 78457547208 in words is "seventy-eight billion, four hundred fifty-seven million, five hundred forty-seven thousand, two hundred eight".