11965361973 has 8 divisors (see below), whose sum is σ = 16010191008. Its totient is φ = 7948720464.

The previous prime is 11965361951. The next prime is 11965361983. The reversal of 11965361973 is 37916356911.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11965361973 - 2⁶ = 11965361909 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11965361983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7045890 + ... + 7047587.

It is an arithmetic number, because the mean of its divisors is an integer number (2001273876).

Almost surely, 2^11965361973 is an apocalyptic number.

It is an amenable number.

11965361973 is a deficient number, since it is larger than the sum of its proper divisors (4044829035).

11965361973 is a wasteful number, since it uses less digits than its factorization.

11965361973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14093763.

The product of its digits is 918540, while the sum is 51.

The spelling of 11965361973 in words is "eleven billion, nine hundred sixty-five million, three hundred sixty-one thousand, nine hundred seventy-three".