78534071154 has 576 divisors, whose sum is σ = 243797299200. Its totient is φ = 18664732800.

The previous prime is 78534071149. The next prime is 78534071171. The reversal of 78534071154 is 45117043587.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 154290652 + ... + 154291160.

It is an arithmetic number, because the mean of its divisors is an integer number (423259200).

Almost surely, 2^78534071154 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78534071154, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121898649600).

78534071154 is an abundant number, since it is smaller than the sum of its proper divisors (165263228046).

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

78534071154 is a wasteful number, since it uses less digits than its factorization.

78534071154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601 (or 582 counting only the distinct ones).

The product of its (nonzero) digits is 470400, while the sum is 45.

The spelling of 78534071154 in words is "seventy-eight billion, five hundred thirty-four million, seventy-one thousand, one hundred fifty-four".