778152012 has 48 divisors (see below), whose sum is σ = 2049062400. Its totient is φ = 227671360.

The previous prime is 778151993. The next prime is 778152017. The reversal of 778152012 is 210251877.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (778152017) 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 15 ways as a sum of consecutive naturals, for example, 97812 + ... + 105467.

It is an arithmetic number, because the mean of its divisors is an integer number (42688800).

Almost surely, 2^778152012 is an apocalyptic number.

It is an amenable number.

778152012 is an abundant number, since it is smaller than the sum of its proper divisors (1270910388).

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

778152012 is a wasteful number, since it uses less digits than its factorization.

778152012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203326 (or 203324 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 33.

The square root of 778152012 is about 27895.3761759902. The cubic root of 778152012 is about 919.7888661687.

The spelling of 778152012 in words is "seven hundred seventy-eight million, one hundred fifty-two thousand, twelve".