70205256490 has 16 divisors (see below), whose sum is σ = 133802959752. Its totient is φ = 26430214144.

The previous prime is 70205256487. The next prime is 70205256491. The reversal of 70205256490 is 9465250207.

It can be written as a sum of positive squares in 4 ways, for example, as 58309209729 + 11896046761 = 241473^2 + 109069^2 .

It is not an unprimeable number, because it can be changed into a prime (70205256491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206485879 + ... + 206486218.

Almost surely, 2^70205256490 is an apocalyptic number.

70205256490 is a deficient number, since it is larger than the sum of its proper divisors (63597703262).

70205256490 is a wasteful number, since it uses less digits than its factorization.

70205256490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412972121.

The product of its (nonzero) digits is 151200, while the sum is 40.

The spelling of 70205256490 in words is "seventy billion, two hundred five million, two hundred fifty-six thousand, four hundred ninety".