40479125761 has 2 divisors, whose sum is σ = 40479125762. Its totient is φ = 40479125760.

The previous prime is 40479125759. The next prime is 40479125777. The reversal of 40479125761 is 16752197404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38745985600 + 1733140161 = 196840^2 + 41631^2 .

It is a cyclic number.

It is not a de Polignac number, because 40479125761 - 2¹ = 40479125759 is a prime.

Together with 40479125759, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (40479123761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20239562880 + 20239562881.

It is an arithmetic number, because the mean of its divisors is an integer number (20239562881).

Almost surely, 2^40479125761 is an apocalyptic number.

It is an amenable number.

40479125761 is a deficient number, since it is larger than the sum of its proper divisors (1).

40479125761 is an equidigital number, since it uses as much as digits as its factorization.

40479125761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 423360, while the sum is 46.

The spelling of 40479125761 in words is "forty billion, four hundred seventy-nine million, one hundred twenty-five thousand, seven hundred sixty-one".