123723771866 has 8 divisors (see below), whose sum is σ = 189534288960. Its totient is φ = 60545675548.

The previous prime is 123723771839. The next prime is 123723771877. The reversal of 123723771866 is 668177327321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 658105076 + ... + 658105263.

It is an arithmetic number, because the mean of its divisors is an integer number (23691786120).

Almost surely, 2^123723771866 is an apocalyptic number.

123723771866 is a deficient number, since it is larger than the sum of its proper divisors (65810517094).

123723771866 is a wasteful number, since it uses less digits than its factorization.

123723771866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1316210388.

The product of its digits is 3556224, while the sum is 53.

The spelling of 123723771866 in words is "one hundred twenty-three billion, seven hundred twenty-three million, seven hundred seventy-one thousand, eight hundred sixty-six".