11631421061 has 8 divisors (see below), whose sum is σ = 12930215424. Its totient is φ = 10390350960.

The previous prime is 11631421051. The next prime is 11631421079. The reversal of 11631421061 is 16012413611.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11631421061 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11631421061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11631421031) 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, 14430641 + ... + 14431446.

It is an arithmetic number, because the mean of its divisors is an integer number (1616276928).

Almost surely, 2^11631421061 is an apocalyptic number.

It is an amenable number.

11631421061 is a deficient number, since it is larger than the sum of its proper divisors (1298794363).

11631421061 is a wasteful number, since it uses less digits than its factorization.

11631421061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28862131.

The product of its (nonzero) digits is 864, while the sum is 26.

Adding to 11631421061 its reverse (16012413611), we get a palindrome (27643834672).

The spelling of 11631421061 in words is "eleven billion, six hundred thirty-one million, four hundred twenty-one thousand, sixty-one".