40745754657 has 12 divisors (see below), whose sum is σ = 61952609680. Its totient is φ = 25734160728.

The previous prime is 40745754629. The next prime is 40745754661. The reversal of 40745754657 is 75645754704.

40745754657 is a `hidden beast` number, since 4 + 0 + 7 + 4 + 575 + 4 + 65 + 7 = 666.

It is not a de Polignac number, because 40745754657 - 2⁶ = 40745754593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40745754677) 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, 119139463 + ... + 119139804.

Almost surely, 2^40745754657 is an apocalyptic number.

It is an amenable number.

40745754657 is a deficient number, since it is larger than the sum of its proper divisors (21206855023).

40745754657 is a wasteful number, since it uses less digits than its factorization.

40745754657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238279292 (or 238279289 counting only the distinct ones).

The product of its (nonzero) digits is 16464000, while the sum is 54.

The spelling of 40745754657 in words is "forty billion, seven hundred forty-five million, seven hundred fifty-four thousand, six hundred fifty-seven".