71242115211 has 24 divisors (see below), whose sum is σ = 105314070576. Its totient is φ = 46383321600.

The previous prime is 71242115099. The next prime is 71242115249. The reversal of 71242115211 is 11251124217.

71242115211 is a `hidden beast` number, since 7 + 12 + 421 + 15 + 211 = 666.

It is not a de Polignac number, because 71242115211 - 2¹⁴ = 71242098827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71242115011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4618111 + ... + 4633511.

It is an arithmetic number, because the mean of its divisors is an integer number (4388086274).

Almost surely, 2^71242115211 is an apocalyptic number.

71242115211 is a deficient number, since it is larger than the sum of its proper divisors (34071955365).

71242115211 is a wasteful number, since it uses less digits than its factorization.

71242115211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27403 (or 27400 counting only the distinct ones).

The product of its digits is 1120, while the sum is 27.

Adding to 71242115211 its reverse (11251124217), we get a palindrome (82493239428).

The spelling of 71242115211 in words is "seventy-one billion, two hundred forty-two million, one hundred fifteen thousand, two hundred eleven".