78430117632 has 288 divisors, whose sum is σ = 226207027200. Its totient is φ = 24044138496.

The previous prime is 78430117609. The next prime is 78430117639. The reversal of 78430117632 is 23671103487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78430117639) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 149961723 + ... + 149962245.

Almost surely, 2^78430117632 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 78430117632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113103513600).

78430117632 is an abundant number, since it is smaller than the sum of its proper divisors (147776909568).

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

78430117632 is a wasteful number, since it uses less digits than its factorization.

78430117632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 843 (or 829 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 42.

The spelling of 78430117632 in words is "seventy-eight billion, four hundred thirty million, one hundred seventeen thousand, six hundred thirty-two".