11949550583 has 2 divisors, whose sum is σ = 11949550584. Its totient is φ = 11949550582.

The previous prime is 11949550553. The next prime is 11949550603. The reversal of 11949550583 is 38505594911.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11949550583 - 2¹⁶ = 11949485047 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11949550513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5974775291 + 5974775292.

It is an arithmetic number, because the mean of its divisors is an integer number (5974775292).

Almost surely, 2^11949550583 is an apocalyptic number.

11949550583 is a deficient number, since it is larger than the sum of its proper divisors (1).

11949550583 is an equidigital number, since it uses as much as digits as its factorization.

11949550583 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972000, while the sum is 50.

The spelling of 11949550583 in words is "eleven billion, nine hundred forty-nine million, five hundred fifty thousand, five hundred eighty-three".