78541078140 has 480 divisors, whose sum is σ = 302286466944. Its totient is φ = 16661790720.

The previous prime is 78541078127. The next prime is 78541078141. The reversal of 78541078140 is 4187014587.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78541078141) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 14070150 + ... + 14075730.

Almost surely, 2^78541078140 is an apocalyptic number.

78541078140 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78541078140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151143233472).

78541078140 is an abundant number, since it is smaller than the sum of its proper divisors (223745388804).

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

78541078140 is a wasteful number, since it uses less digits than its factorization.

78541078140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5699 (or 5688 counting only the distinct ones).

The product of its (nonzero) digits is 250880, while the sum is 45.

The spelling of 78541078140 in words is "seventy-eight billion, five hundred forty-one million, seventy-eight thousand, one hundred forty".