40604351657 has 2 divisors, whose sum is σ = 40604351658. Its totient is φ = 40604351656.

The previous prime is 40604351629. The next prime is 40604351663. The reversal of 40604351657 is 75615340604.

40604351657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20528012176 + 20076339481 = 143276^2 + 141691^2 .

It is a cyclic number.

It is not a de Polignac number, because 40604351657 - 2⁸ = 40604351401 is a prime.

It is not a weakly prime, because it can be changed into another prime (40604351677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20302175828 + 20302175829.

It is an arithmetic number, because the mean of its divisors is an integer number (20302175829).

Almost surely, 2^40604351657 is an apocalyptic number.

It is an amenable number.

40604351657 is a deficient number, since it is larger than the sum of its proper divisors (1).

40604351657 is an equidigital number, since it uses as much as digits as its factorization.

40604351657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 302400, while the sum is 41.

The spelling of 40604351657 in words is "forty billion, six hundred four million, three hundred fifty-one thousand, six hundred fifty-seven".