5615666278 has 8 divisors (see below), whose sum is σ = 8425691568. Its totient is φ = 2807102424.

The previous prime is 5615666263. The next prime is 5615666279. The reversal of 5615666278 is 8726665165.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5615666279) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 355701 + ... + 371152.

It is an arithmetic number, because the mean of its divisors is an integer number (1053211446).

Almost surely, 2^5615666278 is an apocalyptic number.

5615666278 is a deficient number, since it is larger than the sum of its proper divisors (2810025290).

5615666278 is a wasteful number, since it uses less digits than its factorization.

5615666278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 730718.

The product of its digits is 3628800, while the sum is 52.

The square root of 5615666278 is about 74937.7493523791. The cubic root of 5615666278 is about 1777.4624320096.

The spelling of 5615666278 in words is "five billion, six hundred fifteen million, six hundred sixty-six thousand, two hundred seventy-eight".