11944867507 has 4 divisors (see below), whose sum is σ = 12356759520. Its totient is φ = 11532975496.

The previous prime is 11944867481. The next prime is 11944867513. The reversal of 11944867507 is 70576844911.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70576844911 = 443 ⋅159315677.

It is a cyclic number.

It is not a de Polignac number, because 11944867507 - 2⁷ = 11944867379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11944867577) 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, 205945963 + ... + 205946020.

It is an arithmetic number, because the mean of its divisors is an integer number (3089189880).

Almost surely, 2^11944867507 is an apocalyptic number.

11944867507 is a deficient number, since it is larger than the sum of its proper divisors (411892013).

11944867507 is an equidigital number, since it uses as much as digits as its factorization.

11944867507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411892012.

The product of its (nonzero) digits is 1693440, while the sum is 52.

The spelling of 11944867507 in words is "eleven billion, nine hundred forty-four million, eight hundred sixty-seven thousand, five hundred seven".