11557742371 has 32 divisors (see below), whose sum is σ = 13503739392. Its totient is φ = 9688922880.

The previous prime is 11557742363. The next prime is 11557742387. The reversal of 11557742371 is 17324775511.

It is not a de Polignac number, because 11557742371 - 2³ = 11557742363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11557742321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24748680 + ... + 24749146.

It is an arithmetic number, because the mean of its divisors is an integer number (421991856).

Almost surely, 2^11557742371 is an apocalyptic number.

11557742371 is a deficient number, since it is larger than the sum of its proper divisors (1945997021).

11557742371 is a wasteful number, since it uses less digits than its factorization.

11557742371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 939.

The product of its digits is 205800, while the sum is 43.

The spelling of 11557742371 in words is "eleven billion, five hundred fifty-seven million, seven hundred forty-two thousand, three hundred seventy-one".