780078051 has 12 divisors (see below), whose sum is σ = 1175770128. Its totient is φ = 497440944.

The previous prime is 780078049. The next prime is 780078071. The reversal of 780078051 is 150870087.

It is not a de Polignac number, because 780078051 - 2¹ = 780078049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 780077997 and 780078015.

It is not an unprimeable number, because it can be changed into a prime (780078001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1884040 + ... + 1884453.

It is an arithmetic number, because the mean of its divisors is an integer number (97980844).

Almost surely, 2^780078051 is an apocalyptic number.

780078051 is a deficient number, since it is larger than the sum of its proper divisors (395692077).

780078051 is a wasteful number, since it uses less digits than its factorization.

780078051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3768522 (or 3768519 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 36.

The square root of 780078051 is about 27929.8773896342. The cubic root of 780078051 is about 920.5471111703.

The spelling of 780078051 in words is "seven hundred eighty million, seventy-eight thousand, fifty-one".