6378780734 has 16 divisors (see below), whose sum is σ = 9924815472. Its totient is φ = 3072541248.

The previous prime is 6378780721. The next prime is 6378780743. The reversal of 6378780734 is 4370878736.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 501749 + ... + 514304.

It is an arithmetic number, because the mean of its divisors is an integer number (620300967).

Almost surely, 2^6378780734 is an apocalyptic number.

6378780734 is a deficient number, since it is larger than the sum of its proper divisors (3546034738).

6378780734 is a wasteful number, since it uses less digits than its factorization.

6378780734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1016171.

The product of its (nonzero) digits is 4741632, while the sum is 53.

The square root of 6378780734 is about 79867.2694788046. The cubic root of 6378780734 is about 1854.5813634766.

The spelling of 6378780734 in words is "six billion, three hundred seventy-eight million, seven hundred eighty thousand, seven hundred thirty-four".