40761033721 has 2 divisors, whose sum is σ = 40761033722. Its totient is φ = 40761033720.

The previous prime is 40761033707. The next prime is 40761033737. The reversal of 40761033721 is 12733016704.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30323346496 + 10437687225 = 174136^2 + 102165^2 .

It is a cyclic number.

It is not a de Polignac number, because 40761033721 - 2⁵ = 40761033689 is a prime.

It is a super-2 number, since 2×40761033721² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40761633721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20380516860 + 20380516861.

It is an arithmetic number, because the mean of its divisors is an integer number (20380516861).

Almost surely, 2^40761033721 is an apocalyptic number.

It is an amenable number.

40761033721 is a deficient number, since it is larger than the sum of its proper divisors (1).

40761033721 is an equidigital number, since it uses as much as digits as its factorization.

40761033721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 34.

The spelling of 40761033721 in words is "forty billion, seven hundred sixty-one million, thirty-three thousand, seven hundred twenty-one".