78834926500 has 192 divisors, whose sum is σ = 198702346752. Its totient is φ = 27042048000.

The previous prime is 78834926473. The next prime is 78834926501. The reversal of 78834926500 is 562943887.

It is not an unprimeable number, because it can be changed into a prime (78834926501) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9230232 + ... + 9238768.

It is an arithmetic number, because the mean of its divisors is an integer number (1034908056).

Almost surely, 2^78834926500 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 78834926500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99351173376).

78834926500 is an abundant number, since it is smaller than the sum of its proper divisors (119867420252).

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

78834926500 is a wasteful number, since it uses less digits than its factorization.

78834926500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8663 (or 8651 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 52.

The spelling of 78834926500 in words is "seventy-eight billion, eight hundred thirty-four million, nine hundred twenty-six thousand, five hundred".