40845271257 has 36 divisors (see below), whose sum is σ = 70486247104. Its totient is φ = 22325347440.

The previous prime is 40845271237. The next prime is 40845271283. The reversal of 40845271257 is 75217254804.

40845271257 is a `hidden beast` number, since 40 + 84 + 527 + 1 + 2 + 5 + 7 = 666.

It is not a de Polignac number, because 40845271257 - 2¹² = 40845267161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40845271237) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 579469 + ... + 646122.

Almost surely, 2^40845271257 is an apocalyptic number.

It is an amenable number.

40845271257 is a deficient number, since it is larger than the sum of its proper divisors (29640975847).

40845271257 is a wasteful number, since it uses less digits than its factorization.

40845271257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1225650 (or 1225624 counting only the distinct ones).

The product of its (nonzero) digits is 627200, while the sum is 45.

The spelling of 40845271257 in words is "forty billion, eight hundred forty-five million, two hundred seventy-one thousand, two hundred fifty-seven".