70121716607 has 4 divisors (see below), whose sum is σ = 70139504400. Its totient is φ = 70103928816.

The previous prime is 70121716591. The next prime is 70121716631. The reversal of 70121716607 is 70661712107.

It is a happy number.

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 70121716607 - 2⁴ = 70121716591 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 (70121716697) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8887982 + ... + 8895867.

It is an arithmetic number, because the mean of its divisors is an integer number (17534876100).

Almost surely, 2^70121716607 is an apocalyptic number.

70121716607 is a deficient number, since it is larger than the sum of its proper divisors (17787793).

70121716607 is a wasteful number, since it uses less digits than its factorization.

70121716607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17787792.

The product of its (nonzero) digits is 24696, while the sum is 38.

The spelling of 70121716607 in words is "seventy billion, one hundred twenty-one million, seven hundred sixteen thousand, six hundred seven".