40485702557 has 2 divisors, whose sum is σ = 40485702558. Its totient is φ = 40485702556.

The previous prime is 40485702541. The next prime is 40485702559. The reversal of 40485702557 is 75520758404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21510915556 + 18974787001 = 146666^2 + 137749^2 .

It is a cyclic number.

It is not a de Polignac number, because 40485702557 - 2⁴ = 40485702541 is a prime.

It is a super-2 number, since 2×40485702557² (a number of 22 digits) contains 22 as substring.

Together with 40485702559, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40485702559) 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, 20242851278 + 20242851279.

It is an arithmetic number, because the mean of its divisors is an integer number (20242851279).

Almost surely, 2^40485702557 is an apocalyptic number.

It is an amenable number.

40485702557 is a deficient number, since it is larger than the sum of its proper divisors (1).

40485702557 is an equidigital number, since it uses as much as digits as its factorization.

40485702557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1568000, while the sum is 47.

The spelling of 40485702557 in words is "forty billion, four hundred eighty-five million, seven hundred two thousand, five hundred fifty-seven".