1603761000666 has 48 divisors (see below), whose sum is σ = 3592144638432. Its totient is φ = 476818582240.

The previous prime is 1603761000649. The next prime is 1603761000713. The reversal of 1603761000666 is 6660001673061.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 20801496 + ... + 20878451.

It is an arithmetic number, because the mean of its divisors is an integer number (74836346634).

Almost surely, 2^{1603761000666} is an apocalyptic number.

1603761000666 is an abundant number, since it is smaller than the sum of its proper divisors (1988383637766).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1603761000666 is a wasteful number, since it uses less digits than its factorization.

1603761000666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41680027 (or 41680016 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 42.

The spelling of 1603761000666 in words is "one trillion, six hundred three billion, seven hundred sixty-one million, six hundred sixty-six", and thus it is an aban number.