123450666729 has 32 divisors (see below), whose sum is σ = 179665430784. Its totient is φ = 74945260800.

The previous prime is 123450666697. The next prime is 123450666733. The reversal of 123450666729 is 927666054321.

It is not a de Polignac number, because 123450666729 - 2⁵ = 123450666697 is a prime.

It is a super-3 number, since 3×123450666729³ (a number of 34 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (123450666799) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1034532 + ... + 1147674.

It is an arithmetic number, because the mean of its divisors is an integer number (5614544712).

Almost surely, 2^123450666729 is an apocalyptic number.

It is an amenable number.

123450666729 is a deficient number, since it is larger than the sum of its proper divisors (56214764055).

123450666729 is a wasteful number, since it uses less digits than its factorization.

123450666729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113537.

The product of its (nonzero) digits is 3265920, while the sum is 51.

The spelling of 123450666729 in words is "one hundred twenty-three billion, four hundred fifty million, six hundred sixty-six thousand, seven hundred twenty-nine".