17940685703 has 2 divisors, whose sum is σ = 17940685704. Its totient is φ = 17940685702.

The previous prime is 17940685681. The next prime is 17940685709. The reversal of 17940685703 is 30758604971.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 17940685703 - 2¹² = 17940681607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17940685709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8970342851 + 8970342852.

It is an arithmetic number, because the mean of its divisors is an integer number (8970342852).

Almost surely, 2^17940685703 is an apocalyptic number.

17940685703 is a deficient number, since it is larger than the sum of its proper divisors (1).

17940685703 is an equidigital number, since it uses as much as digits as its factorization.

17940685703 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1270080, while the sum is 50.

The spelling of 17940685703 in words is "seventeen billion, nine hundred forty million, six hundred eighty-five thousand, seven hundred three".