11653620241 has 4 divisors (see below), whose sum is σ = 12339127332. Its totient is φ = 10968113152.

The previous prime is 11653620221. The next prime is 11653620259. The reversal of 11653620241 is 14202635611.

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: 14202635611 = 1427 ⋅9952793.

It can be written as a sum of positive squares in 2 ways, for example, as 10637859600 + 1015760641 = 103140^2 + 31871^2 .

It is a cyclic number.

It is not a de Polignac number, because 11653620241 - 2²⁷ = 11519402513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11653620221) 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, 342753520 + ... + 342753553.

It is an arithmetic number, because the mean of its divisors is an integer number (3084781833).

Almost surely, 2^11653620241 is an apocalyptic number.

It is an amenable number.

11653620241 is a deficient number, since it is larger than the sum of its proper divisors (685507091).

11653620241 is an equidigital number, since it uses as much as digits as its factorization.

11653620241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685507090.

The product of its (nonzero) digits is 8640, while the sum is 31.

The spelling of 11653620241 in words is "eleven billion, six hundred fifty-three million, six hundred twenty thousand, two hundred forty-one".