11642161331 has 8 divisors (see below), whose sum is σ = 12077743680. Its totient is φ = 11208854272.

The previous prime is 11642161319. The next prime is 11642161387. The reversal of 11642161331 is 13316124611.

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

It is a cyclic number.

It is not a de Polignac number, because 11642161331 - 2¹⁸ = 11641899187 is a prime.

It is a super-2 number, since 2×11642161331² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a junction number, because it is equal to n+sod(n) for n = 11642161294 and 11642161303.

It is not an unprimeable number, because it can be changed into a prime (11642161301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 558395 + ... + 578868.

It is an arithmetic number, because the mean of its divisors is an integer number (1509717960).

Almost surely, 2^11642161331 is an apocalyptic number.

11642161331 is a deficient number, since it is larger than the sum of its proper divisors (435582349).

11642161331 is a wasteful number, since it uses less digits than its factorization.

11642161331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1137645.

The product of its digits is 2592, while the sum is 29.

Adding to 11642161331 its reverse (13316124611), we get a palindrome (24958285942).

The spelling of 11642161331 in words is "eleven billion, six hundred forty-two million, one hundred sixty-one thousand, three hundred thirty-one".