70001270161 has 4 divisors (see below), whose sum is σ = 70058229300. Its totient is φ = 69944311024.

The previous prime is 70001270137. The next prime is 70001270167. The reversal of 70001270161 is 16107210007.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16107210007 = 7 ⋅2301030001.

It can be written as a sum of positive squares in 2 ways, for example, as 48375803025 + 21625467136 = 219945^2 + 147056^2 .

It is a cyclic number.

It is not a de Polignac number, because 70001270161 - 2¹⁹ = 70000745873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70001270167) 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, 28477726 + ... + 28480183.

It is an arithmetic number, because the mean of its divisors is an integer number (17514557325).

Almost surely, 2^70001270161 is an apocalyptic number.

It is an amenable number.

70001270161 is a deficient number, since it is larger than the sum of its proper divisors (56959139).

70001270161 is a wasteful number, since it uses less digits than its factorization.

70001270161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56959138.

The product of its (nonzero) digits is 588, while the sum is 25.

Adding to 70001270161 its reverse (16107210007), we get a palindrome (86108480168).

The spelling of 70001270161 in words is "seventy billion, one million, two hundred seventy thousand, one hundred sixty-one".