71012421007 has 4 divisors (see below), whose sum is σ = 77468095656. Its totient is φ = 64556746360.

The previous prime is 71012420951. The next prime is 71012421047. The reversal of 71012421007 is 70012421017.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 71012421007 - 2⁷ = 71012420879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71012421047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3227837308 + ... + 3227837329.

It is an arithmetic number, because the mean of its divisors is an integer number (19367023914).

Almost surely, 2^71012421007 is an apocalyptic number.

71012421007 is a deficient number, since it is larger than the sum of its proper divisors (6455674649).

71012421007 is a wasteful number, since it uses less digits than its factorization.

71012421007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6455674648.

The product of its (nonzero) digits is 784, while the sum is 25.

The spelling of 71012421007 in words is "seventy-one billion, twelve million, four hundred twenty-one thousand, seven".