11557765642 has 8 divisors (see below), whose sum is σ = 17427416832. Its totient is φ = 5748626700.

The previous prime is 11557765603. The next prime is 11557765657. The reversal of 11557765642 is 24656775511.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15127584 + ... + 15128347.

It is an arithmetic number, because the mean of its divisors is an integer number (2178427104).

Almost surely, 2^11557765642 is an apocalyptic number.

11557765642 is a deficient number, since it is larger than the sum of its proper divisors (5869651190).

11557765642 is a wasteful number, since it uses less digits than its factorization.

11557765642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30256124.

The product of its digits is 1764000, while the sum is 49.

The spelling of 11557765642 in words is "eleven billion, five hundred fifty-seven million, seven hundred sixty-five thousand, six hundred forty-two".