78007780050 has 48 divisors (see below), whose sum is σ = 200130315840. Its totient is φ = 20084760640.

The previous prime is 78007780049. The next prime is 78007780057. The reversal of 78007780050 is 5008770087.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 78007779984 and 78007780011.

It is not an unprimeable number, because it can be changed into a prime (78007780057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8962062 + ... + 8970761.

It is an arithmetic number, because the mean of its divisors is an integer number (4169381580).

Almost surely, 2^78007780050 is an apocalyptic number.

78007780050 is an abundant number, since it is smaller than the sum of its proper divisors (122122535790).

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

78007780050 is a wasteful number, since it uses less digits than its factorization.

78007780050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17932867 (or 17932862 counting only the distinct ones).

The product of its (nonzero) digits is 109760, while the sum is 42.

The spelling of 78007780050 in words is "seventy-eight billion, seven million, seven hundred eighty thousand, fifty".