123297801650 has 12 divisors (see below), whose sum is σ = 229333911162. Its totient is φ = 49319120640.

The previous prime is 123297801647. The next prime is 123297801659. The reversal of 123297801650 is 56108792321.

It can be written as a sum of positive squares in 3 ways, for example, as 120566589529 + 2731212121 = 347227^2 + 52261^2 .

It is not an unprimeable number, because it can be changed into a prime (123297801659) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1232977967 + ... + 1232978066.

Almost surely, 2^123297801650 is an apocalyptic number.

123297801650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123297801650 is a deficient number, since it is larger than the sum of its proper divisors (106036109512).

123297801650 is a wasteful number, since it uses less digits than its factorization.

123297801650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2465956045 (or 2465956040 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 44.

The spelling of 123297801650 in words is "one hundred twenty-three billion, two hundred ninety-seven million, eight hundred one thousand, six hundred fifty".