70438342181 has 16 divisors (see below), whose sum is σ = 76842925488. Its totient is φ = 64314777600.

The previous prime is 70438342159. The next prime is 70438342241. The reversal of 70438342181 is 18124383407.

It can be written as a sum of positive squares in 8 ways, for example, as 5841544900 + 64596797281 = 76430^2 + 254159^2 .

It is a cyclic number.

It is not a de Polignac number, because 70438342181 - 2¹⁰ = 70438341157 is a prime.

It is a super-2 number, since 2×70438342181² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70438342151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 389540 + ... + 540941.

It is an arithmetic number, because the mean of its divisors is an integer number (4802682843).

Almost surely, 2^70438342181 is an apocalyptic number.

It is an amenable number.

70438342181 is a deficient number, since it is larger than the sum of its proper divisors (6404583307).

70438342181 is a wasteful number, since it uses less digits than its factorization.

70438342181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 930632.

The product of its (nonzero) digits is 129024, while the sum is 41.

The spelling of 70438342181 in words is "seventy billion, four hundred thirty-eight million, three hundred forty-two thousand, one hundred eighty-one".