70028507641 has 9 divisors (see below), whose sum is σ = 71389028109. Its totient is φ = 68693454336.

The previous prime is 70028507623. The next prime is 70028507687. The reversal of 70028507641 is 14670582007.

The square root of 70028507641 is 264629.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 385297641 + 69643210000 = 19629^2 + 263900^2 .

It is not a de Polignac number, because 70028507641 - 2¹¹ = 70028505593 is a prime.

It is a super-3 number, since 3×70028507641³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 70028507594 and 70028507603.

It is not an unprimeable number, because it can be changed into a prime (70028507611) 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 8 ways as a sum of consecutive naturals, for example, 14022841 + ... + 14027833.

Almost surely, 2^70028507641 is an apocalyptic number.

70028507641 is the 264629-th square number.

70028507641 is the 132315-th centered octagonal number.

It is an amenable number.

70028507641 is a deficient number, since it is larger than the sum of its proper divisors (1360520468).

70028507641 is an frugal number, since it uses more digits than its factorization.

70028507641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10092 (or 5046 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 40.

The spelling of 70028507641 in words is "seventy billion, twenty-eight million, five hundred seven thousand, six hundred forty-one".