712440117021 has 8 divisors (see below), whose sum is σ = 949997579104. Its totient is φ = 474921366480.

The previous prime is 712440117019. The next prime is 712440117071. The reversal of 712440117021 is 120711044217.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 712440117021 - 2¹ = 712440117019 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 712440117021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (712440117071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9634915 + ... + 9708576.

It is an arithmetic number, because the mean of its divisors is an integer number (118749697388).

Almost surely, 2^712440117021 is an apocalyptic number.

It is an amenable number.

712440117021 is a deficient number, since it is larger than the sum of its proper divisors (237557462083).

712440117021 is a wasteful number, since it uses less digits than its factorization.

712440117021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19355771.

The product of its (nonzero) digits is 3136, while the sum is 30.

The spelling of 712440117021 in words is "seven hundred twelve billion, four hundred forty million, one hundred seventeen thousand, twenty-one".