78472998208 has 56 divisors (see below), whose sum is σ = 170248624704. Its totient is φ = 35591347200.

The previous prime is 78472998187. The next prime is 78472998211. The reversal of 78472998208 is 80289927487.

It is a super-2 number, since 2×78472998208² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (64).

It is a self number, because there is not a number n which added to its sum of digits gives 78472998208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199773 + ... + 443683.

Almost surely, 2^78472998208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78472998208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85124312352).

78472998208 is an abundant number, since it is smaller than the sum of its proper divisors (91775626496).

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

78472998208 is a wasteful number, since it uses less digits than its factorization.

78472998208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244391 (or 244381 counting only the distinct ones).

The product of its (nonzero) digits is 32514048, while the sum is 64.

The spelling of 78472998208 in words is "seventy-eight billion, four hundred seventy-two million, nine hundred ninety-eight thousand, two hundred eight".