40274543655 has 32 divisors (see below), whose sum is σ = 71648881920. Its totient is φ = 21464848800.

The previous prime is 40274543653. The next prime is 40274543669. The reversal of 40274543655 is 55634547204.

40274543655 is a `hidden beast` number, since 40 + 2 + 7 + 4 + 543 + 65 + 5 = 666.

It is not a de Polignac number, because 40274543655 - 2¹ = 40274543653 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 40274543655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40274543653) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 93084 + ... + 298686.

It is an arithmetic number, because the mean of its divisors is an integer number (2239027560).

Almost surely, 2^40274543655 is an apocalyptic number.

40274543655 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

40274543655 is a deficient number, since it is larger than the sum of its proper divisors (31374338265).

40274543655 is a wasteful number, since it uses less digits than its factorization.

40274543655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207068 (or 207062 counting only the distinct ones).

The product of its (nonzero) digits is 2016000, while the sum is 45.

The spelling of 40274543655 in words is "forty billion, two hundred seventy-four million, five hundred forty-three thousand, six hundred fifty-five".