78494543337600 has 768 divisors, whose sum is σ = 313282156992000. Its totient is φ = 19077133271040.

The previous prime is 78494543337599. The next prime is 78494543337631. The reversal of 78494543337600 is 673334549487.

It is a happy number.

78494543337600 is a `hidden beast` number, since 7 + 8 + 494 + 5 + 43 + 33 + 76 + 0 + 0 = 666.

It is a super-2 number, since 2×78494543337600² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 88290492 + ... + 89175108.

It is an arithmetic number, because the mean of its divisors is an integer number (407919475250).

Almost surely, 2^{78494543337600} 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 78494543337600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156641078496000).

78494543337600 is an abundant number, since it is smaller than the sum of its proper divisors (234787613654400).

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

78494543337600 is a wasteful number, since it uses less digits than its factorization.

78494543337600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884742 (or 884719 counting only the distinct ones).

The product of its (nonzero) digits is 182891520, while the sum is 63.

The spelling of 78494543337600 in words is "seventy-eight trillion, four hundred ninety-four billion, five hundred forty-three million, three hundred thirty-seven thousand, six hundred".