5661912371 has 2 divisors, whose sum is σ = 5661912372. Its totient is φ = 5661912370.

The previous prime is 5661912367. The next prime is 5661912397. The reversal of 5661912371 is 1732191665.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5661912371 - 2² = 5661912367 is a prime.

It is not a weakly prime, because it can be changed into another prime (5661912301) 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 as a sum of consecutive naturals, namely, 2830956185 + 2830956186.

It is an arithmetic number, because the mean of its divisors is an integer number (2830956186).

Almost surely, 2^5661912371 is an apocalyptic number.

5661912371 is a deficient number, since it is larger than the sum of its proper divisors (1).

5661912371 is an equidigital number, since it uses as much as digits as its factorization.

5661912371 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 68040, while the sum is 41.

The square root of 5661912371 is about 75245.6800819821. The cubic root of 5661912371 is about 1782.3283475526.

The spelling of 5661912371 in words is "five billion, six hundred sixty-one million, nine hundred twelve thousand, three hundred seventy-one".