78403761600 has 504 divisors, whose sum is σ = 277726688640. Its totient is φ = 19327334400.

The previous prime is 78403761581. The next prime is 78403761613. The reversal of 78403761600 is 616730487.

It is a super-2 number, since 2×78403761600² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 106094031 + ... + 106094769.

Almost surely, 2^78403761600 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 78403761600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138863344320).

78403761600 is an abundant number, since it is smaller than the sum of its proper divisors (199322927040).

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

78403761600 is a wasteful number, since it uses less digits than its factorization.

78403761600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849 (or 803 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 42.

The spelling of 78403761600 in words is "seventy-eight billion, four hundred three million, seven hundred sixty-one thousand, six hundred".