11712737642 has 8 divisors (see below), whose sum is σ = 17601583332. Its totient is φ = 5845543200.

The previous prime is 11712737627. The next prime is 11712737651. The reversal of 11712737642 is 24673721711.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10786691881 + 926045761 = 103859^2 + 30431^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 11712737642.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5411459 + ... + 5413622.

Almost surely, 2^11712737642 is an apocalyptic number.

11712737642 is a deficient number, since it is larger than the sum of its proper divisors (5888845690).

11712737642 is a wasteful number, since it uses less digits than its factorization.

11712737642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10825624.

The product of its digits is 98784, while the sum is 41.

The spelling of 11712737642 in words is "eleven billion, seven hundred twelve million, seven hundred thirty-seven thousand, six hundred forty-two".