7161215706211 has 4 divisors (see below), whose sum is σ = 8184246521392. Its totient is φ = 6138184891032.

The previous prime is 7161215706193. The next prime is 7161215706217. The reversal of 7161215706211 is 1126075121617.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7161215706211 - 2⁵ = 7161215706179 is a prime.

It is a super-2 number, since 2×7161215706211² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7161215706217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 511515407580 + ... + 511515407593.

It is an arithmetic number, because the mean of its divisors is an integer number (2046061630348).

Almost surely, 2^{7161215706211} is an apocalyptic number.

7161215706211 is a deficient number, since it is larger than the sum of its proper divisors (1023030815181).

7161215706211 is a wasteful number, since it uses less digits than its factorization.

7161215706211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1023030815180.

The product of its (nonzero) digits is 35280, while the sum is 40.

The spelling of 7161215706211 in words is "seven trillion, one hundred sixty-one billion, two hundred fifteen million, seven hundred six thousand, two hundred eleven".