70227775538 has 6 divisors (see below), whose sum is σ = 105342225471. Its totient is φ = 35113700382.

The previous prime is 70227775537. The next prime is 70227775559. The reversal of 70227775538 is 83557772207.

It can be written as a sum of positive squares in only one way, i.e., 35113887769 + 35113887769 = 187387^2 + 187387^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=187387.

It is a super-2 number, since 2×70227775538² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 70227775538.

It is not an unprimeable number, because it can be changed into a prime (70227775537) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 281081 + ... + 468467.

Almost surely, 2^70227775538 is an apocalyptic number.

70227775538 is a deficient number, since it is larger than the sum of its proper divisors (35114449933).

70227775538 is an frugal number, since it uses more digits than its factorization.

70227775538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374776 (or 187389 counting only the distinct ones).

The product of its (nonzero) digits is 5762400, while the sum is 53.

The spelling of 70227775538 in words is "seventy billion, two hundred twenty-seven million, seven hundred seventy-five thousand, five hundred thirty-eight".