71225635149 has 10 divisors (see below), whose sum is σ = 106398788430. Its totient is φ = 47483756712.

The previous prime is 71225635081. The next prime is 71225635183. The reversal of 71225635149 is 94153652217.

71225635149 is a `hidden beast` number, since 7 + 1 + 2 + 2 + 5 + 635 + 1 + 4 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 54869783049 + 16355852100 = 234243^2 + 127890^2 .

It is not a de Polignac number, because 71225635149 - 2¹² = 71225631053 is a prime.

It is a super-2 number, since 2×71225635149² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71225635849) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 439664334 + ... + 439664495.

It is an arithmetic number, because the mean of its divisors is an integer number (10639878843).

Almost surely, 2^71225635149 is an apocalyptic number.

It is an amenable number.

71225635149 is a deficient number, since it is larger than the sum of its proper divisors (35173153281).

71225635149 is an equidigital number, since it uses as much as digits as its factorization.

71225635149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 879328841 (or 879328832 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The spelling of 71225635149 in words is "seventy-one billion, two hundred twenty-five million, six hundred thirty-five thousand, one hundred forty-nine".