4778252615 has 8 divisors (see below), whose sum is σ = 5746452720. Its totient is φ = 3814235712.

The previous prime is 4778252593. The next prime is 4778252663. The reversal of 4778252615 is 5162528774.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4778252615 - 2⁶ = 4778252551 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4778252615.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1043285 + ... + 1047854.

It is an arithmetic number, because the mean of its divisors is an integer number (718306590).

Almost surely, 2^4778252615 is an apocalyptic number.

4778252615 is a deficient number, since it is larger than the sum of its proper divisors (968200105).

4778252615 is a wasteful number, since it uses less digits than its factorization.

4778252615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2091601.

The product of its digits is 940800, while the sum is 47.

The square root of 4778252615 is about 69124.9058950535. The cubic root of 4778252615 is about 1684.3139102910.

The spelling of 4778252615 in words is "four billion, seven hundred seventy-eight million, two hundred fifty-two thousand, six hundred fifteen".