40748135643 has 24 divisors (see below), whose sum is σ = 61949404608. Its totient is φ = 26759958984.

The previous prime is 40748135629. The next prime is 40748135671. The reversal of 40748135643 is 34653184704.

40748135643 is a `hidden beast` number, since 4 + 0 + 7 + 4 + 81 + 3 + 564 + 3 = 666.

It is not a de Polignac number, because 40748135643 - 2⁴ = 40748135627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40748145643) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1235121 + ... + 1267682.

It is an arithmetic number, because the mean of its divisors is an integer number (2581225192).

Almost surely, 2^40748135643 is an apocalyptic number.

40748135643 is a deficient number, since it is larger than the sum of its proper divisors (21201268965).

40748135643 is an equidigital number, since it uses as much as digits as its factorization.

40748135643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2502885 (or 2502873 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 45.

The spelling of 40748135643 in words is "forty billion, seven hundred forty-eight million, one hundred thirty-five thousand, six hundred forty-three".