40555642653 has 16 divisors (see below), whose sum is σ = 62694714240. Its totient is φ = 25861568832.

The previous prime is 40555642651. The next prime is 40555642657. The reversal of 40555642653 is 35624655504.

40555642653 is a `hidden beast` number, since 4 + 0 + 5 + 556 + 42 + 6 + 53 = 666.

It is not a de Polignac number, because 40555642653 - 2¹ = 40555642651 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40555642599 and 40555642608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40555642651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32652876 + ... + 32654117.

It is an arithmetic number, because the mean of its divisors is an integer number (3918419640).

Almost surely, 2^40555642653 is an apocalyptic number.

It is an amenable number.

40555642653 is a deficient number, since it is larger than the sum of its proper divisors (22139071587).

40555642653 is a wasteful number, since it uses less digits than its factorization.

40555642653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65307025 (or 65307019 counting only the distinct ones).

The product of its (nonzero) digits is 2160000, while the sum is 45.

The spelling of 40555642653 in words is "forty billion, five hundred fifty-five million, six hundred forty-two thousand, six hundred fifty-three".