71134587745 has 32 divisors (see below), whose sum is σ = 94259932704. Its totient is φ = 51199948800.

The previous prime is 71134587743. The next prime is 71134587791. The reversal of 71134587745 is 54778543117.

It can be written as a sum of positive squares in 16 ways, for example, as 50174208016 + 20960379729 = 223996^2 + 144777^2 .

It is not a de Polignac number, because 71134587745 - 2¹ = 71134587743 is a prime.

It is a super-2 number, since 2×71134587745² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71134587692 and 71134587701.

It is not an unprimeable number, because it can be changed into a prime (71134587743) 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, 2900635 + ... + 2925055.

It is an arithmetic number, because the mean of its divisors is an integer number (2945622897).

Almost surely, 2^71134587745 is an apocalyptic number.

It is an amenable number.

71134587745 is a deficient number, since it is larger than the sum of its proper divisors (23125344959).

71134587745 is a wasteful number, since it uses less digits than its factorization.

71134587745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25573.

The product of its digits is 3292800, while the sum is 52.

The spelling of 71134587745 in words is "seventy-one billion, one hundred thirty-four million, five hundred eighty-seven thousand, seven hundred forty-five".