71687970707 has 2 divisors, whose sum is σ = 71687970708. Its totient is φ = 71687970706.

The previous prime is 71687970689. The next prime is 71687970719. The reversal of 71687970707 is 70707978617.

It is a strong prime.

It is an emirp because it is prime and its reverse (70707978617) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71687970707 - 2⁶ = 71687970643 is a prime.

It is not a weakly prime, because it can be changed into another prime (71687970407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35843985353 + 35843985354.

It is an arithmetic number, because the mean of its divisors is an integer number (35843985354).

Almost surely, 2^71687970707 is an apocalyptic number.

71687970707 is a deficient number, since it is larger than the sum of its proper divisors (1).

71687970707 is an equidigital number, since it uses as much as digits as its factorization.

71687970707 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7260624, while the sum is 59.

The spelling of 71687970707 in words is "seventy-one billion, six hundred eighty-seven million, nine hundred seventy thousand, seven hundred seven".