4278578513 has 12 divisors (see below), whose sum is σ = 4979543940. Its totient is φ = 3660814080.

The previous prime is 4278578483. The next prime is 4278578543. The reversal of 4278578513 is 3158758724.

It is an interprime number because it is at equal distance from previous prime (4278578483) and next prime (4278578543).

It can be written as a sum of positive squares in 2 ways, for example, as 2187619984 + 2090958529 = 46772^2 + 45727^2 .

It is not a de Polignac number, because 4278578513 - 2¹⁸ = 4278316369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4278578543) 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, 1037948 + ... + 1042061.

It is an arithmetic number, because the mean of its divisors is an integer number (414961995).

Almost surely, 2^4278578513 is an apocalyptic number.

It is an amenable number.

4278578513 is a deficient number, since it is larger than the sum of its proper divisors (700965427).

4278578513 is a wasteful number, since it uses less digits than its factorization.

4278578513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2080048 (or 2080037 counting only the distinct ones).

The product of its digits is 1881600, while the sum is 50.

The square root of 4278578513 is about 65410.8440015874. The cubic root of 4278578513 is about 1623.4285100023.

The spelling of 4278578513 in words is "four billion, two hundred seventy-eight million, five hundred seventy-eight thousand, five hundred thirteen".