40757000665921 has 2 divisors, whose sum is σ = 40757000665922. Its totient is φ = 40757000665920.

The previous prime is 40757000665897. The next prime is 40757000666003. The reversal of 40757000665921 is 12956600075704.

40757000665921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38078328343696 + 2678672322225 = 6170764^2 + 1636665^2 .

It is a cyclic number.

It is not a de Polignac number, because 40757000665921 - 2¹⁹ = 40757000141633 is a prime.

It is a super-2 number, since 2×40757000665921² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40757000605921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20378500332960 + 20378500332961.

It is an arithmetic number, because the mean of its divisors is an integer number (20378500332961).

Almost surely, 2^{40757000665921} is an apocalyptic number.

It is an amenable number.

40757000665921 is a deficient number, since it is larger than the sum of its proper divisors (1).

40757000665921 is an equidigital number, since it uses as much as digits as its factorization.

40757000665921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3175200, while the sum is 52.

The spelling of 40757000665921 in words is "forty trillion, seven hundred fifty-seven billion, six hundred sixty-five thousand, nine hundred twenty-one".