71012137045 has 4 divisors (see below), whose sum is σ = 85214564460. Its totient is φ = 56809709632.

The previous prime is 71012137033. The next prime is 71012137057. The reversal of 71012137045 is 54073121017.

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

It is an interprime number because it is at equal distance from previous prime (71012137033) and next prime (71012137057).

It can be written as a sum of positive squares in 2 ways, for example, as 20746945444 + 50265191601 = 144038^2 + 224199^2 .

It is a cyclic number.

It is not a de Polignac number, because 71012137045 - 2²³ = 71003748437 is a prime.

It is a super-2 number, since 2×71012137045² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 71012136998 and 71012137016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7101213700 + ... + 7101213709.

It is an arithmetic number, because the mean of its divisors is an integer number (21303641115).

Almost surely, 2^71012137045 is an apocalyptic number.

It is an amenable number.

71012137045 is a deficient number, since it is larger than the sum of its proper divisors (14202427415).

71012137045 is a wasteful number, since it uses less digits than its factorization.

71012137045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14202427414.

The product of its (nonzero) digits is 5880, while the sum is 31.

The spelling of 71012137045 in words is "seventy-one billion, twelve million, one hundred thirty-seven thousand, forty-five".