11557761371 has 8 divisors (see below), whose sum is σ = 12596782800. Its totient is φ = 10540163232.

The previous prime is 11557761361. The next prime is 11557761377. The reversal of 11557761371 is 17316775511.

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

It is a cyclic number.

It is not a de Polignac number, because 11557761371 - 2⁶ = 11557761307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11557761377) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5354696 + ... + 5356853.

It is an arithmetic number, because the mean of its divisors is an integer number (1574597850).

Almost surely, 2^11557761371 is an apocalyptic number.

11557761371 is a deficient number, since it is larger than the sum of its proper divisors (1039021429).

11557761371 is a wasteful number, since it uses less digits than its factorization.

11557761371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10711645.

The product of its digits is 154350, while the sum is 44.

The spelling of 11557761371 in words is "eleven billion, five hundred fifty-seven million, seven hundred sixty-one thousand, three hundred seventy-one".