11549961073 has 4 divisors (see below), whose sum is σ = 13199955520. Its totient is φ = 9899966628.

The previous prime is 11549961043. The next prime is 11549961079. The reversal of 11549961073 is 37016994511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11549961073 - 2¹⁷ = 11549830001 is a prime.

It is a super-2 number, since 2×11549961073² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11549961079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 824997213 + ... + 824997226.

It is an arithmetic number, because the mean of its divisors is an integer number (3299988880).

Almost surely, 2^11549961073 is an apocalyptic number.

It is an amenable number.

11549961073 is a deficient number, since it is larger than the sum of its proper divisors (1649994447).

11549961073 is an equidigital number, since it uses as much as digits as its factorization.

11549961073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1649994446.

The product of its (nonzero) digits is 204120, while the sum is 46.

The spelling of 11549961073 in words is "eleven billion, five hundred forty-nine million, nine hundred sixty-one thousand, seventy-three".