78190498428 has 96 divisors (see below), whose sum is σ = 221342284800. Its totient is φ = 20971815936.

The previous prime is 78190498423. The next prime is 78190498453. The reversal of 78190498428 is 82489409187.

It is a happy number.

It is a super-2 number, since 2×78190498428² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78190498423) 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, 485113 + ... + 625871.

It is an arithmetic number, because the mean of its divisors is an integer number (2305648800).

Almost surely, 2^78190498428 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 78190498428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110671142400).

78190498428 is an abundant number, since it is smaller than the sum of its proper divisors (143151786372).

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

78190498428 is a wasteful number, since it uses less digits than its factorization.

78190498428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141179 (or 141177 counting only the distinct ones).

The product of its (nonzero) digits is 9289728, while the sum is 60.

The spelling of 78190498428 in words is "seventy-eight billion, one hundred ninety million, four hundred ninety-eight thousand, four hundred twenty-eight".