7663878215 has 16 divisors (see below), whose sum is σ = 10511907840. Its totient is φ = 5254507680.

The previous prime is 7663878161. The next prime is 7663878251. The reversal of 7663878215 is 5128783667.

7663878215 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7663878215 - 2⁶ = 7663878151 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 419420 + ... + 437310.

It is an arithmetic number, because the mean of its divisors is an integer number (656994240).

Almost surely, 2^7663878215 is an apocalyptic number.

7663878215 is a deficient number, since it is larger than the sum of its proper divisors (2848029625).

7663878215 is a wasteful number, since it uses less digits than its factorization.

7663878215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30142.

The product of its digits is 3386880, while the sum is 53.

The square root of 7663878215 is about 87543.5789478589. The cubic root of 7663878215 is about 1971.5881457695.

The spelling of 7663878215 in words is "seven billion, six hundred sixty-three million, eight hundred seventy-eight thousand, two hundred fifteen".