5661920278 has 16 divisors (see below), whose sum is σ = 10277099424. Its totient is φ = 2283799680.

The previous prime is 5661920267. The next prime is 5661920293. The reversal of 5661920278 is 8720291665.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11894553 + ... + 11895028.

It is an arithmetic number, because the mean of its divisors is an integer number (642318714).

Almost surely, 2^5661920278 is an apocalyptic number.

5661920278 is a deficient number, since it is larger than the sum of its proper divisors (4615179146).

5661920278 is a wasteful number, since it uses less digits than its factorization.

5661920278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23789607.

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 5661920278 is about 75245.7326231860. The cubic root of 5661920278 is about 1782.3291772407.

The spelling of 5661920278 in words is "five billion, six hundred sixty-one million, nine hundred twenty thousand, two hundred seventy-eight".