40135653261 has 48 divisors (see below), whose sum is σ = 64277411328. Its totient is φ = 23928727200.

The previous prime is 40135653203. The next prime is 40135653263. The reversal of 40135653261 is 16235653104.

40135653261 is a `hidden beast` number, since 4 + 0 + 1 + 3 + 565 + 32 + 61 = 666.

40135653261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40135653261 - 2¹⁹ = 40135128973 is a prime.

It is a super-2 number, since 2×40135653261² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40135653263) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3276430 + ... + 3288656.

It is an arithmetic number, because the mean of its divisors is an integer number (1339112736).

Almost surely, 2^40135653261 is an apocalyptic number.

It is an amenable number.

40135653261 is a deficient number, since it is larger than the sum of its proper divisors (24141758067).

40135653261 is a wasteful number, since it uses less digits than its factorization.

40135653261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12782 (or 12779 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

It can be divided in two parts, 40135 and 653261, that added together give a palindrome (693396).

The spelling of 40135653261 in words is "forty billion, one hundred thirty-five million, six hundred fifty-three thousand, two hundred sixty-one".