123925816016 has 40 divisors (see below), whose sum is σ = 240642217704. Its totient is φ = 61824729600.

The previous prime is 123925816013. The next prime is 123925816019. The reversal of 123925816016 is 610618529321.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (123925816013) and next prime (123925816019).

It can be written as a sum of positive squares in 4 ways, for example, as 14830368400 + 109095447616 = 121780^2 + 330296^2 .

It is a super-2 number, since 2×123925816016² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123925816013) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 24291866 + ... + 24296966.

Almost surely, 2^123925816016 is an apocalyptic number.

123925816016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

123925816016 is a deficient number, since it is larger than the sum of its proper divisors (116716401688).

123925816016 is a wasteful number, since it uses less digits than its factorization.

123925816016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8199 (or 8193 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 44.

The spelling of 123925816016 in words is "one hundred twenty-three billion, nine hundred twenty-five million, eight hundred sixteen thousand, sixteen".