70346678081 has 4 divisors (see below), whose sum is σ = 70753306452. Its totient is φ = 69940049712.

The previous prime is 70346678069. The next prime is 70346678099. The reversal of 70346678081 is 18087664307.

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

It can be written as a sum of positive squares in 2 ways, for example, as 25819347856 + 44527330225 = 160684^2 + 211015^2 .

It is a de Polignac number, because none of the positive numbers 2^k-70346678081 is a prime.

It is a super-2 number, since 2×70346678081² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70346678021) 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, 203313926 + ... + 203314271.

It is an arithmetic number, because the mean of its divisors is an integer number (17688326613).

Almost surely, 2^70346678081 is an apocalyptic number.

It is an amenable number.

70346678081 is a deficient number, since it is larger than the sum of its proper divisors (406628371).

70346678081 is a wasteful number, since it uses less digits than its factorization.

70346678081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406628370.

The product of its (nonzero) digits is 1354752, while the sum is 50.

The spelling of 70346678081 in words is "seventy billion, three hundred forty-six million, six hundred seventy-eight thousand, eighty-one".