11620642242 has 64 divisors (see below), whose sum is σ = 26383864320. Its totient is φ = 3381168000.

The previous prime is 11620642219. The next prime is 11620642249. The reversal of 11620642242 is 24224602611.

11620642242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×11620642242² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11620642249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 132742 + ... + 202142.

It is an arithmetic number, because the mean of its divisors is an integer number (412247880).

Almost surely, 2^11620642242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11620642242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13191932160).

11620642242 is an abundant number, since it is smaller than the sum of its proper divisors (14763222078).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11620642242 is a wasteful number, since it uses less digits than its factorization.

11620642242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69519.

The product of its (nonzero) digits is 9216, while the sum is 30.

The spelling of 11620642242 in words is "eleven billion, six hundred twenty million, six hundred forty-two thousand, two hundred forty-two".