11919571071 has 8 divisors (see below), whose sum is σ = 15895820544. Its totient is φ = 7944851160.

The previous prime is 11919571049. The next prime is 11919571091. The reversal of 11919571071 is 17017591911.

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

It is not a de Polignac number, because 11919571071 - 2⁶ = 11919571007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11919571091) 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, 364081 + ... + 395466.

It is an arithmetic number, because the mean of its divisors is an integer number (1986977568).

Almost surely, 2^11919571071 is an apocalyptic number.

11919571071 is a deficient number, since it is larger than the sum of its proper divisors (3976249473).

11919571071 is an equidigital number, since it uses as much as digits as its factorization.

11919571071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764781.

The product of its (nonzero) digits is 19845, while the sum is 42.

The spelling of 11919571071 in words is "eleven billion, nine hundred nineteen million, five hundred seventy-one thousand, seventy-one".