55649618747 has 2 divisors, whose sum is σ = 55649618748. Its totient is φ = 55649618746.

The previous prime is 55649618729. The next prime is 55649618767. The reversal of 55649618747 is 74781694655.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55649618747 - 2¹² = 55649614651 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55649618747.

It is not a weakly prime, because it can be changed into another prime (55649618707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27824809373 + 27824809374.

It is an arithmetic number, because the mean of its divisors is an integer number (27824809374).

Almost surely, 2^55649618747 is an apocalyptic number.

55649618747 is a deficient number, since it is larger than the sum of its proper divisors (1).

55649618747 is an equidigital number, since it uses as much as digits as its factorization.

55649618747 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 50803200, while the sum is 62.

The spelling of 55649618747 in words is "fifty-five billion, six hundred forty-nine million, six hundred eighteen thousand, seven hundred forty-seven".