55107649691 has 2 divisors, whose sum is σ = 55107649692. Its totient is φ = 55107649690.

The previous prime is 55107649679. The next prime is 55107649717. The reversal of 55107649691 is 19694670155.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55107649691 is a prime.

It is not a weakly prime, because it can be changed into another prime (55107642691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27553824845 + 27553824846.

It is an arithmetic number, because the mean of its divisors is an integer number (27553824846).

Almost surely, 2^55107649691 is an apocalyptic number.

55107649691 is a deficient number, since it is larger than the sum of its proper divisors (1).

55107649691 is an equidigital number, since it uses as much as digits as its factorization.

55107649691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2041200, while the sum is 53.

The spelling of 55107649691 in words is "fifty-five billion, one hundred seven million, six hundred forty-nine thousand, six hundred ninety-one".