40693742257 has 16 divisors (see below), whose sum is σ = 47698752640. Its totient is φ = 33990388992.

The previous prime is 40693742071. The next prime is 40693742261. The reversal of 40693742257 is 75224739604.

40693742257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-40693742257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40693742257.

It is not an unprimeable number, because it can be changed into a prime (40693743257) 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, 25782 + ... + 286447.

It is an arithmetic number, because the mean of its divisors is an integer number (2981172040).

Almost surely, 2^40693742257 is an apocalyptic number.

It is an amenable number.

40693742257 is a deficient number, since it is larger than the sum of its proper divisors (7005010383).

40693742257 is a wasteful number, since it uses less digits than its factorization.

40693742257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312712.

The product of its (nonzero) digits is 2540160, while the sum is 49.

The spelling of 40693742257 in words is "forty billion, six hundred ninety-three million, seven hundred forty-two thousand, two hundred fifty-seven".