11741721171 has 16 divisors (see below), whose sum is σ = 15701672448. Its totient is φ = 7804820000.

The previous prime is 11741721133. The next prime is 11741721197. The reversal of 11741721171 is 17112714711.

It is a cyclic number.

It is not a de Polignac number, because 11741721171 - 2²⁵ = 11708166739 is a prime.

It is a super-2 number, since 2×11741721171² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11741723171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2469046 + ... + 2473796.

It is an arithmetic number, because the mean of its divisors is an integer number (981354528).

Almost surely, 2^11741721171 is an apocalyptic number.

11741721171 is a deficient number, since it is larger than the sum of its proper divisors (3959951277).

11741721171 is a wasteful number, since it uses less digits than its factorization.

11741721171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7002.

The product of its digits is 2744, while the sum is 33.

The spelling of 11741721171 in words is "eleven billion, seven hundred forty-one million, seven hundred twenty-one thousand, one hundred seventy-one".