78644265000 has 480 divisors, whose sum is σ = 290243717280. Its totient is φ = 17696448000.

The previous prime is 78644264977. The next prime is 78644265041. The reversal of 78644265000 is 56244687.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 49244202 + ... + 49245798.

It is an arithmetic number, because the mean of its divisors is an integer number (604674411).

Almost surely, 2^78644265000 is an apocalyptic number.

78644265000 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78644265000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145121858640).

78644265000 is an abundant number, since it is smaller than the sum of its proper divisors (211599452280).

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

78644265000 is a wasteful number, since it uses less digits than its factorization.

78644265000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1707 (or 1681 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 42.

The spelling of 78644265000 in words is "seventy-eight billion, six hundred forty-four million, two hundred sixty-five thousand".