40601656653 has 16 divisors (see below), whose sum is σ = 54220046976. Its totient is φ = 27025556480.

The previous prime is 40601656573. The next prime is 40601656687. The reversal of 40601656653 is 35665610604.

It is a cyclic number.

It is not a de Polignac number, because 40601656653 - 2¹⁰ = 40601655629 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40601656253) 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, 6223033 + ... + 6229553.

It is an arithmetic number, because the mean of its divisors is an integer number (3388752936).

Almost surely, 2^40601656653 is an apocalyptic number.

It is an amenable number.

40601656653 is a deficient number, since it is larger than the sum of its proper divisors (13618390323).

40601656653 is a wasteful number, since it uses less digits than its factorization.

40601656653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9444.

The product of its (nonzero) digits is 388800, while the sum is 42.

Subtracting from 40601656653 its reverse (35665610604), we obtain a square (4936046049 = 70257²).

The spelling of 40601656653 in words is "forty billion, six hundred one million, six hundred fifty-six thousand, six hundred fifty-three".