70520359381 has 4 divisors (see below), whose sum is σ = 70526119500. Its totient is φ = 70514599264.

The previous prime is 70520359379. The next prime is 70520359417. The reversal of 70520359381 is 18395302507.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18395302507 = 677 ⋅27171791.

It can be written as a sum of positive squares in 2 ways, for example, as 59112196900 + 11408162481 = 243130^2 + 106809^2 .

It is a cyclic number.

It is not a de Polignac number, because 70520359381 - 2¹ = 70520359379 is a prime.

It is a super-2 number, since 2×70520359381² (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 (70520359081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2861656 + ... + 2886193.

It is an arithmetic number, because the mean of its divisors is an integer number (17631529875).

Almost surely, 2^70520359381 is an apocalyptic number.

It is an amenable number.

70520359381 is a deficient number, since it is larger than the sum of its proper divisors (5760119).

70520359381 is a wasteful number, since it uses less digits than its factorization.

70520359381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5760118.

The product of its (nonzero) digits is 226800, while the sum is 43.

The spelling of 70520359381 in words is "seventy billion, five hundred twenty million, three hundred fifty-nine thousand, three hundred eighty-one".