7132811491 has 32 divisors (see below), whose sum is σ = 8059251200. Its totient is φ = 6273523872.

The previous prime is 7132811473. The next prime is 7132811503. The reversal of 7132811491 is 1941182317.

It is not a de Polignac number, because 7132811491 - 2¹¹ = 7132809443 is a prime.

It is a super-2 number, since 2×7132811491² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7132811491.

It is not an unprimeable number, because it can be changed into a prime (7132811891) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 69250546 + ... + 69250648.

It is an arithmetic number, because the mean of its divisors is an integer number (251851600).

Almost surely, 2^7132811491 is an apocalyptic number.

7132811491 is a deficient number, since it is larger than the sum of its proper divisors (926439709).

7132811491 is an equidigital number, since it uses as much as digits as its factorization.

7132811491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312 (or 226 counting only the distinct ones).

The product of its digits is 12096, while the sum is 37.

The square root of 7132811491 is about 84455.9736845180. The cubic root of 7132811491 is about 1924.9535259259.

The spelling of 7132811491 in words is "seven billion, one hundred thirty-two million, eight hundred eleven thousand, four hundred ninety-one".