71000737744 has 20 divisors (see below), whose sum is σ = 137642997700. Its totient is φ = 35479964160.

The previous prime is 71000737699. The next prime is 71000737789. The reversal of 71000737744 is 44773700017.

It is an interprime number because it is at equal distance from previous prime (71000737699) and next prime (71000737789).

It can be written as a sum of positive squares in 2 ways, for example, as 5879822400 + 65120915344 = 76680^2 + 255188^2 .

It is a super-2 number, since 2×71000737744² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 71000737697 and 71000737706.

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, 1246569 + ... + 1302280.

It is an arithmetic number, because the mean of its divisors is an integer number (6882149885).

Almost surely, 2^71000737744 is an apocalyptic number.

It is an amenable number.

71000737744 is a deficient number, since it is larger than the sum of its proper divisors (66642259956).

71000737744 is a wasteful number, since it uses less digits than its factorization.

71000737744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2550598 (or 2550592 counting only the distinct ones).

The product of its (nonzero) digits is 115248, while the sum is 40.

The spelling of 71000737744 in words is "seventy-one billion, seven hundred thirty-seven thousand, seven hundred forty-four".