70905897813 has 16 divisors (see below), whose sum is σ = 95108232960. Its totient is φ = 46987199424.

The previous prime is 70905897763. The next prime is 70905897817. The reversal of 70905897813 is 31879850907.

It is not a de Polignac number, because 70905897813 - 2⁹ = 70905897301 is a prime.

It is a super-3 number, since 3×70905897813³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70905897817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2968723 + ... + 2992511.

It is an arithmetic number, because the mean of its divisors is an integer number (5944264560).

Almost surely, 2^70905897813 is an apocalyptic number.

It is an amenable number.

70905897813 is a deficient number, since it is larger than the sum of its proper divisors (24202335147).

70905897813 is a wasteful number, since it uses less digits than its factorization.

70905897813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29708.

The product of its (nonzero) digits is 3810240, while the sum is 57.

The spelling of 70905897813 in words is "seventy billion, nine hundred five million, eight hundred ninety-seven thousand, eight hundred thirteen".