11961630669 has 8 divisors (see below), whose sum is σ = 15949484800. Its totient is φ = 7974098496.

The previous prime is 11961630619. The next prime is 11961630689. The reversal of 11961630669 is 96603616911.

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

It is not a de Polignac number, because 11961630669 - 2¹⁷ = 11961499597 is a prime.

It is a super-2 number, since 2×11961630669² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11961630619) 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, 26532 + ... + 156930.

It is an arithmetic number, because the mean of its divisors is an integer number (1993685600).

Almost surely, 2^11961630669 is an apocalyptic number.

It is an amenable number.

11961630669 is a deficient number, since it is larger than the sum of its proper divisors (3987854131).

11961630669 is a wasteful number, since it uses less digits than its factorization.

11961630669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160979.

The product of its (nonzero) digits is 314928, while the sum is 48.

The spelling of 11961630669 in words is "eleven billion, nine hundred sixty-one million, six hundred thirty thousand, six hundred sixty-nine".