71075251149 has 16 divisors (see below), whose sum is σ = 108563642880. Its totient is φ = 40517492400.

The previous prime is 71075251133. The next prime is 71075251183. The reversal of 71075251149 is 94115257017.

It is not a de Polignac number, because 71075251149 - 2⁴ = 71075251133 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71075251149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71075253149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4030027 + ... + 4047624.

It is an arithmetic number, because the mean of its divisors is an integer number (6785227680).

Almost surely, 2^71075251149 is an apocalyptic number.

It is an amenable number.

71075251149 is a deficient number, since it is larger than the sum of its proper divisors (37488391731).

71075251149 is a wasteful number, since it uses less digits than its factorization.

71075251149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8078080.

The product of its (nonzero) digits is 88200, while the sum is 42.

The spelling of 71075251149 in words is "seventy-one billion, seventy-five million, two hundred fifty-one thousand, one hundred forty-nine".