78627940650 has 576 divisors, whose sum is σ = 263536882560. Its totient is φ = 17171481600.

The previous prime is 78627940631. The next prime is 78627940663. The reversal of 78627940650 is 5604972687.

78627940650 is a `hidden beast` number, since 7 + 8 + 627 + 9 + 4 + 0 + 6 + 5 + 0 = 666.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 143743677 + ... + 143744223.

It is an arithmetic number, because the mean of its divisors is an integer number (457529310).

Almost surely, 2^78627940650 is an apocalyptic number.

78627940650 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 78627940650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131768441280).

78627940650 is an abundant number, since it is smaller than the sum of its proper divisors (184908941910).

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

78627940650 is a wasteful number, since it uses less digits than its factorization.

78627940650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676 (or 658 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 54.

The spelling of 78627940650 in words is "seventy-eight billion, six hundred twenty-seven million, nine hundred forty thousand, six hundred fifty".