123000451166 has 16 divisors (see below), whose sum is σ = 189651655824. Its totient is φ = 59786118144.

The previous prime is 123000451163. The next prime is 123000451181. The reversal of 123000451166 is 661154000321.

It is a happy number.

It is a super-2 number, since 2×123000451166² (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 (123000451163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 635480 + ... + 806123.

It is an arithmetic number, because the mean of its divisors is an integer number (11853228489).

Almost surely, 2^123000451166 is an apocalyptic number.

123000451166 is a deficient number, since it is larger than the sum of its proper divisors (66651204658).

123000451166 is a wasteful number, since it uses less digits than its factorization.

123000451166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1442795.

The product of its (nonzero) digits is 4320, while the sum is 29.

Adding to 123000451166 its reverse (661154000321), we get a palindrome (784154451487).

The spelling of 123000451166 in words is "one hundred twenty-three billion, four hundred fifty-one thousand, one hundred sixty-six".