11513021642 has 8 divisors (see below), whose sum is σ = 17298268932. Its totient is φ = 5746932000.

The previous prime is 11513021623. The next prime is 11513021647. The reversal of 11513021642 is 24612031511.

11513021642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 11492054401 + 20967241 = 107201^2 + 4579^2 .

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

It is not an unprimeable number, because it can be changed into a prime (11513021647) 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 3 ways as a sum of consecutive naturals, for example, 4787909 + ... + 4790312.

Almost surely, 2^11513021642 is an apocalyptic number.

11513021642 is a deficient number, since it is larger than the sum of its proper divisors (5785247290).

11513021642 is an equidigital number, since it uses as much as digits as its factorization.

11513021642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9578824.

The product of its (nonzero) digits is 1440, while the sum is 26.

The spelling of 11513021642 in words is "eleven billion, five hundred thirteen million, twenty-one thousand, six hundred forty-two".