71007136123 has 12 divisors (see below), whose sum is σ = 90109242072. Its totient is φ = 55330235520.

The previous prime is 71007136097. The next prime is 71007136141. The reversal of 71007136123 is 32163170017.

It is not a de Polignac number, because 71007136123 - 2⁹ = 71007135611 is a prime.

It is a super-2 number, since 2×71007136123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71007136223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65868790 + ... + 65869867.

It is an arithmetic number, because the mean of its divisors is an integer number (7509103506).

Almost surely, 2^71007136123 is an apocalyptic number.

71007136123 is a deficient number, since it is larger than the sum of its proper divisors (19102105949).

71007136123 is a wasteful number, since it uses less digits than its factorization.

71007136123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131738682 (or 131738675 counting only the distinct ones).

The product of its (nonzero) digits is 5292, while the sum is 31.

The spelling of 71007136123 in words is "seventy-one billion, seven million, one hundred thirty-six thousand, one hundred twenty-three".