17640057077 has 2 divisors, whose sum is σ = 17640057078. Its totient is φ = 17640057076.

The previous prime is 17640057073. The next prime is 17640057079. The reversal of 17640057077 is 77075004671.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15314310001 + 2325747076 = 123751^2 + 48226^2 .

It is a cyclic number.

It is not a de Polignac number, because 17640057077 - 2² = 17640057073 is a prime.

It is a super-2 number, since 2×17640057077² (a number of 21 digits) contains 22 as substring.

Together with 17640057079, 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 (17640057073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8820028538 + 8820028539.

It is an arithmetic number, because the mean of its divisors is an integer number (8820028539).

Almost surely, 2^17640057077 is an apocalyptic number.

It is an amenable number.

17640057077 is a deficient number, since it is larger than the sum of its proper divisors (1).

17640057077 is an equidigital number, since it uses as much as digits as its factorization.

17640057077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288120, while the sum is 44.

The spelling of 17640057077 in words is "seventeen billion, six hundred forty million, fifty-seven thousand, seventy-seven".