123957551066 has 8 divisors (see below), whose sum is σ = 194020514784. Its totient is φ = 59284046140.

The previous prime is 123957551063. The next prime is 123957551083. The reversal of 123957551066 is 660155759321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (123957551063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1347364640 + ... + 1347364731.

It is an arithmetic number, because the mean of its divisors is an integer number (24252564348).

Almost surely, 2^123957551066 is an apocalyptic number.

123957551066 is a deficient number, since it is larger than the sum of its proper divisors (70062963718).

123957551066 is a wasteful number, since it uses less digits than its factorization.

123957551066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2694729396.

The product of its (nonzero) digits is 1701000, while the sum is 50.

The spelling of 123957551066 in words is "one hundred twenty-three billion, nine hundred fifty-seven million, five hundred fifty-one thousand, sixty-six".