11005981142 has 8 divisors (see below), whose sum is σ = 17778892656. Its totient is φ = 5079683592.

The previous prime is 11005981141. The next prime is 11005981153. The reversal of 11005981142 is 24118950011.

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

It is a super-2 number, since 2×11005981142² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11005981099 and 11005981108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11005981141) 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, 211653458 + ... + 211653509.

It is an arithmetic number, because the mean of its divisors is an integer number (2222361582).

Almost surely, 2^11005981142 is an apocalyptic number.

11005981142 is a deficient number, since it is larger than the sum of its proper divisors (6772911514).

11005981142 is a wasteful number, since it uses less digits than its factorization.

11005981142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423306982.

The product of its (nonzero) digits is 2880, while the sum is 32.

The spelling of 11005981142 in words is "eleven billion, five million, nine hundred eighty-one thousand, one hundred forty-two".