78540870348 has 96 divisors (see below), whose sum is σ = 205019942400. Its totient is φ = 26001254592.

The previous prime is 78540870341. The next prime is 78540870377. The reversal of 78540870348 is 84307804587.

It is a happy number.

It is a super-2 number, since 2×78540870348² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 78540870294 and 78540870303.

It is not an unprimeable number, because it can be changed into a prime (78540870341) 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, 19001290 + ... + 19005422.

It is an arithmetic number, because the mean of its divisors is an integer number (2135624400).

Almost surely, 2^78540870348 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 78540870348, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102509971200).

78540870348 is an abundant number, since it is smaller than the sum of its proper divisors (126479072052).

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

78540870348 is a wasteful number, since it uses less digits than its factorization.

78540870348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5308 (or 5300 counting only the distinct ones).

The product of its (nonzero) digits is 6021120, while the sum is 54.

The spelling of 78540870348 in words is "seventy-eight billion, five hundred forty million, eight hundred seventy thousand, three hundred forty-eight".