78500354144 has 48 divisors (see below), whose sum is σ = 158559009840. Its totient is φ = 38234327040.

The previous prime is 78500354137. The next prime is 78500354173. The reversal of 78500354144 is 44145300587.

It is a Harshad number since it is a multiple of its sum of digits (41).

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, 819212 + ... + 910004.

It is an arithmetic number, because the mean of its divisors is an integer number (3303312705).

Almost surely, 2^78500354144 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 78500354144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79279504920).

78500354144 is an abundant number, since it is smaller than the sum of its proper divisors (80058655696).

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

78500354144 is a wasteful number, since it uses less digits than its factorization.

78500354144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91503 (or 91495 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 41.

The spelling of 78500354144 in words is "seventy-eight billion, five hundred million, three hundred fifty-four thousand, one hundred forty-four".