78836963040 has 480 divisors, whose sum is σ = 313330913280. Its totient is φ = 18494438400.

The previous prime is 78836963011. The next prime is 78836963063. The reversal of 78836963040 is 4036963887.

It is a tau number, because it is divible by the number of its divisors (480).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 4410441 + ... + 4428279.

It is an arithmetic number, because the mean of its divisors is an integer number (652772736).

Almost surely, 2^78836963040 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 78836963040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156665456640).

78836963040 is an abundant number, since it is smaller than the sum of its proper divisors (234493950240).

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

78836963040 is a wasteful number, since it uses less digits than its factorization.

78836963040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17908 (or 17891 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 54.

The spelling of 78836963040 in words is "seventy-eight billion, eight hundred thirty-six million, nine hundred sixty-three thousand, forty".