6514139385 has 24 divisors (see below), whose sum is σ = 12159727944. Its totient is φ = 3206960640.

The previous prime is 6514139371. The next prime is 6514139393. The reversal of 6514139385 is 5839314156.

It can be written as a sum of positive squares in 4 ways, for example, as 125014761 + 6389124624 = 11181^2 + 79932^2 .

It is not a de Polignac number, because 6514139385 - 2⁶ = 6514139321 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6514139385.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5567056 + ... + 5568225.

It is an arithmetic number, because the mean of its divisors is an integer number (506655331).

Almost surely, 2^6514139385 is an apocalyptic number.

6514139385 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6514139385 is a deficient number, since it is larger than the sum of its proper divisors (5645588559).

6514139385 is a wasteful number, since it uses less digits than its factorization.

6514139385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11135305 (or 11135302 counting only the distinct ones).

The product of its digits is 388800, while the sum is 45.

The square root of 6514139385 is about 80710.2185909566. The cubic root of 6514139385 is about 1867.6078140796.

The spelling of 6514139385 in words is "six billion, five hundred fourteen million, one hundred thirty-nine thousand, three hundred eighty-five".