78235255222098 has 192 divisors, whose sum is σ = 185466945283200. Its totient is φ = 21848923127808.

The previous prime is 78235255222097. The next prime is 78235255222127. The reversal of 78235255222098 is 89022255253287.

It is a happy number.

It is a super-2 number, since 2×78235255222098² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78235255222097) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 93833053 + ... + 94663151.

It is an arithmetic number, because the mean of its divisors is an integer number (965973673350).

Almost surely, 2^{78235255222098} is an apocalyptic number.

78235255222098 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 78235255222098, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92733472641600).

78235255222098 is an abundant number, since it is smaller than the sum of its proper divisors (107231690061102).

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

78235255222098 is a wasteful number, since it uses less digits than its factorization.

78235255222098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 830301 (or 830284 counting only the distinct ones).

The product of its (nonzero) digits is 48384000, while the sum is 60.

The spelling of 78235255222098 in words is "seventy-eight trillion, two hundred thirty-five billion, two hundred fifty-five million, two hundred twenty-two thousand, ninety-eight".