102373193866 has 4 divisors (see below), whose sum is σ = 153559790802. Its totient is φ = 51186596932.

The previous prime is 102373193851. The next prime is 102373193869. The reversal of 102373193866 is 668391373201.

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

It can be written as a sum of positive squares in only one way, i.e., 72161539641 + 30211654225 = 268629^2 + 173815^2 .

It is not an unprimeable number, because it can be changed into a prime (102373193869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25593298465 + ... + 25593298468.

Almost surely, 2^102373193866 is an apocalyptic number.

102373193866 is a deficient number, since it is larger than the sum of its proper divisors (51186596936).

102373193866 is an equidigital number, since it uses as much as digits as its factorization.

102373193866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51186596935.

The product of its (nonzero) digits is 979776, while the sum is 49.

The spelling of 102373193866 in words is "one hundred two billion, three hundred seventy-three million, one hundred ninety-three thousand, eight hundred sixty-six".