71507943707 has 2 divisors, whose sum is σ = 71507943708. Its totient is φ = 71507943706.

The previous prime is 71507943679. The next prime is 71507943733. The reversal of 71507943707 is 70734970517.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71507943707 - 2⁶ = 71507943643 is a prime.

It is a super-2 number, since 2×71507943707² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (71507943757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35753971853 + 35753971854.

It is an arithmetic number, because the mean of its divisors is an integer number (35753971854).

Almost surely, 2^71507943707 is an apocalyptic number.

71507943707 is a deficient number, since it is larger than the sum of its proper divisors (1).

71507943707 is an equidigital number, since it uses as much as digits as its factorization.

71507943707 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296540, while the sum is 50.

The spelling of 71507943707 in words is "seventy-one billion, five hundred seven million, nine hundred forty-three thousand, seven hundred seven".