70405954961 has 4 divisors (see below), whose sum is σ = 70854400692. Its totient is φ = 69957509232.

The previous prime is 70405954951. The next prime is 70405954987. The reversal of 70405954961 is 16945950407.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16945950407 = 223 ⋅75990809.

It can be written as a sum of positive squares in 2 ways, for example, as 45894921361 + 24511033600 = 214231^2 + 156560^2 .

It is a cyclic number.

It is not a de Polignac number, because 70405954961 - 2²² = 70401760657 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (70405954951) 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, 224222630 + ... + 224222943.

It is an arithmetic number, because the mean of its divisors is an integer number (17713600173).

Almost surely, 2^70405954961 is an apocalyptic number.

It is an amenable number.

70405954961 is a deficient number, since it is larger than the sum of its proper divisors (448445731).

70405954961 is a wasteful number, since it uses less digits than its factorization.

70405954961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448445730.

The product of its (nonzero) digits is 1360800, while the sum is 50.

The spelling of 70405954961 in words is "seventy billion, four hundred five million, nine hundred fifty-four thousand, nine hundred sixty-one".