40271256653 has 4 divisors (see below), whose sum is σ = 40281356220. Its totient is φ = 40261157088.

The previous prime is 40271256631. The next prime is 40271256661. The reversal of 40271256653 is 35665217204.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 31059480169 + 9211776484 = 176237^2 + 95978^2 .

It is a cyclic number.

It is not a de Polignac number, because 40271256653 - 2¹⁶ = 40271191117 is a prime.

It is a super-2 number, since 2×40271256653² (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 40271256653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40271256253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5043800 + ... + 5051777.

It is an arithmetic number, because the mean of its divisors is an integer number (10070339055).

Almost surely, 2^40271256653 is an apocalyptic number.

It is an amenable number.

40271256653 is a deficient number, since it is larger than the sum of its proper divisors (10099567).

40271256653 is a wasteful number, since it uses less digits than its factorization.

40271256653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10099566.

The product of its (nonzero) digits is 302400, while the sum is 41.

The spelling of 40271256653 in words is "forty billion, two hundred seventy-one million, two hundred fifty-six thousand, six hundred fifty-three".