270742681557 has 6 divisors (see below), whose sum is σ = 391072762262. Its totient is φ = 180495121032.

The previous prime is 270742681501. The next prime is 270742681579. The reversal of 270742681557 is 755186247072.

270742681557 is a `hidden beast` number, since 2 + 7 + 0 + 7 + 4 + 2 + 6 + 81 + 557 = 666.

It can be written as a sum of positive squares in only one way, i.e., 247878519876 + 22864161681 = 497874^2 + 151209^2 .

It is not a de Polignac number, because 270742681557 - 2¹² = 270742677461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (270742681357) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15041260078 + ... + 15041260095.

Almost surely, 2^270742681557 is an apocalyptic number.

It is an amenable number.

270742681557 is a deficient number, since it is larger than the sum of its proper divisors (120330080705).

270742681557 is a wasteful number, since it uses less digits than its factorization.

270742681557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30082520179 (or 30082520176 counting only the distinct ones).

The product of its (nonzero) digits is 6585600, while the sum is 54.

The spelling of 270742681557 in words is "two hundred seventy billion, seven hundred forty-two million, six hundred eighty-one thousand, five hundred fifty-seven".