71507942873 has 2 divisors, whose sum is σ = 71507942874. Its totient is φ = 71507942872.

The previous prime is 71507942851. The next prime is 71507942903. The reversal of 71507942873 is 37824970517.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59705945104 + 11801997769 = 244348^2 + 108637^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71507942873 is a prime.

It is a super-2 number, since 2×71507942873² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (71507942813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35753971436 + 35753971437.

It is an arithmetic number, because the mean of its divisors is an integer number (35753971437).

Almost surely, 2^71507942873 is an apocalyptic number.

It is an amenable number.

71507942873 is a deficient number, since it is larger than the sum of its proper divisors (1).

71507942873 is an equidigital number, since it uses as much as digits as its factorization.

71507942873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2963520, while the sum is 53.

The spelling of 71507942873 in words is "seventy-one billion, five hundred seven million, nine hundred forty-two thousand, eight hundred seventy-three".