40640541633 has 12 divisors (see below), whose sum is σ = 61255309440. Its totient is φ = 25915707576.

The previous prime is 40640541631. The next prime is 40640541647. The reversal of 40640541633 is 33614504604.

40640541633 is a `hidden beast` number, since 4 + 0 + 640 + 5 + 4 + 1 + 6 + 3 + 3 = 666.

It is not a de Polignac number, because 40640541633 - 2¹ = 40640541631 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40640541631) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 98165353 + ... + 98165766.

It is an arithmetic number, because the mean of its divisors is an integer number (5104609120).

Almost surely, 2^40640541633 is an apocalyptic number.

It is an amenable number.

40640541633 is a deficient number, since it is larger than the sum of its proper divisors (20614767807).

40640541633 is a wasteful number, since it uses less digits than its factorization.

40640541633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196331148 (or 196331145 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

The spelling of 40640541633 in words is "forty billion, six hundred forty million, five hundred forty-one thousand, six hundred thirty-three".