11912697601 has 16 divisors (see below), whose sum is σ = 13756584960. Its totient is φ = 10104436800.

The previous prime is 11912697581. The next prime is 11912697617. The reversal of 11912697601 is 10679621911.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11912697601 - 2⁵ = 11912697569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11912697101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1919235 + ... + 1925431.

It is an arithmetic number, because the mean of its divisors is an integer number (859786560).

Almost surely, 2^11912697601 is an apocalyptic number.

It is an amenable number.

11912697601 is a deficient number, since it is larger than the sum of its proper divisors (1843887359).

11912697601 is a wasteful number, since it uses less digits than its factorization.

11912697601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9024.

The product of its (nonzero) digits is 40824, while the sum is 43.

The spelling of 11912697601 in words is "eleven billion, nine hundred twelve million, six hundred ninety-seven thousand, six hundred one".