66905020703 has 2 divisors, whose sum is σ = 66905020704. Its totient is φ = 66905020702.

The previous prime is 66905020613. The next prime is 66905020729. The reversal of 66905020703 is 30702050966.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66905020703 - 2¹⁶ = 66904955167 is a prime.

It is a super-2 number, since 2×66905020703² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66905022703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33452510351 + 33452510352.

It is an arithmetic number, because the mean of its divisors is an integer number (33452510352).

Almost surely, 2^66905020703 is an apocalyptic number.

66905020703 is a deficient number, since it is larger than the sum of its proper divisors (1).

66905020703 is an equidigital number, since it uses as much as digits as its factorization.

66905020703 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 68040, while the sum is 38.

The spelling of 66905020703 in words is "sixty-six billion, nine hundred five million, twenty thousand, seven hundred three".