66703740403 has 4 divisors (see below), whose sum is σ = 66807479368. Its totient is φ = 66600001440.

The previous prime is 66703740347. The next prime is 66703740407. The reversal of 66703740403 is 30404730766.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66703740403 - 2¹³ = 66703732211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66703740407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51868518 + ... + 51869803.

It is an arithmetic number, because the mean of its divisors is an integer number (16701869842).

Almost surely, 2^66703740403 is an apocalyptic number.

66703740403 is a deficient number, since it is larger than the sum of its proper divisors (103738965).

66703740403 is a wasteful number, since it uses less digits than its factorization.

66703740403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103738964.

The product of its (nonzero) digits is 254016, while the sum is 40.

The spelling of 66703740403 in words is "sixty-six billion, seven hundred three million, seven hundred forty thousand, four hundred three".