40057370673721 has 2 divisors, whose sum is σ = 40057370673722. Its totient is φ = 40057370673720.

The previous prime is 40057370673713. The next prime is 40057370673737. The reversal of 40057370673721 is 12737607375004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27096074641321 + 12961296032400 = 5205389^2 + 3600180^2 .

It is a cyclic number.

It is not a de Polignac number, because 40057370673721 - 2³ = 40057370673713 is a prime.

It is not a weakly prime, because it can be changed into another prime (40057370673521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20028685336860 + 20028685336861.

It is an arithmetic number, because the mean of its divisors is an integer number (20028685336861).

Almost surely, 2^{40057370673721} is an apocalyptic number.

It is an amenable number.

40057370673721 is a deficient number, since it is larger than the sum of its proper divisors (1).

40057370673721 is an equidigital number, since it uses as much as digits as its factorization.

40057370673721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5186160, while the sum is 52.

The spelling of 40057370673721 in words is "forty trillion, fifty-seven billion, three hundred seventy million, six hundred seventy-three thousand, seven hundred twenty-one".