78487617032 has 96 divisors (see below), whose sum is σ = 162991180800. Its totient is φ = 35405715840.

The previous prime is 78487617031. The next prime is 78487617041. The reversal of 78487617032 is 23071678487.

It is not an unprimeable number, because it can be changed into a prime (78487617031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 99729743 + ... + 99730529.

It is an arithmetic number, because the mean of its divisors is an integer number (1697824800).

Almost surely, 2^78487617032 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 78487617032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81495590400).

78487617032 is an abundant number, since it is smaller than the sum of its proper divisors (84503563768).

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

78487617032 is a wasteful number, since it uses less digits than its factorization.

78487617032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1467 (or 1452 counting only the distinct ones).

The product of its (nonzero) digits is 3161088, while the sum is 53.

The spelling of 78487617032 in words is "seventy-eight billion, four hundred eighty-seven million, six hundred seventeen thousand, thirty-two".