80661785948 has 12 divisors (see below), whose sum is σ = 141163281672. Its totient is φ = 40329419760.

The previous prime is 80661785927. The next prime is 80661785957. The reversal of 80661785948 is 84958716608.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 240158 + ... + 467973.

It is an arithmetic number, because the mean of its divisors is an integer number (11763606806).

Almost surely, 2^80661785948 is an apocalyptic number.

It is an amenable number.

80661785948 is a deficient number, since it is larger than the sum of its proper divisors (60501495724).

80661785948 is a wasteful number, since it uses less digits than its factorization.

80661785948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736612 (or 736610 counting only the distinct ones).

The product of its (nonzero) digits is 23224320, while the sum is 62.

The spelling of 80661785948 in words is "eighty billion, six hundred sixty-one million, seven hundred eighty-five thousand, nine hundred forty-eight".