78498452916 has 192 divisors, whose sum is σ = 227744160000. Its totient is φ = 23215901184.

The previous prime is 78498452873. The next prime is 78498452939. The reversal of 78498452916 is 61925489487.

78498452916 is a `hidden beast` number, since 7 + 8 + 4 + 98 + 4 + 529 + 16 = 666.

It is a super-2 number, since 2×78498452916² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9319755 + ... + 9328173.

It is an arithmetic number, because the mean of its divisors is an integer number (1186167500).

Almost surely, 2^78498452916 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 78498452916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113872080000).

78498452916 is an abundant number, since it is smaller than the sum of its proper divisors (149245707084).

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

78498452916 is a wasteful number, since it uses less digits than its factorization.

78498452916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8703 (or 8695 counting only the distinct ones).

The product of its digits is 34836480, while the sum is 63.

The spelling of 78498452916 in words is "seventy-eight billion, four hundred ninety-eight million, four hundred fifty-two thousand, nine hundred sixteen".