123807933945 has 32 divisors (see below), whose sum is σ = 222122313600. Its totient is φ = 65425102272.

The previous prime is 123807933943. The next prime is 123807933961. The reversal of 123807933945 is 549339708321.

123807933945 is a `hidden beast` number, since 1 + 238 + 0 + 79 + 339 + 4 + 5 = 666.

It is not a de Polignac number, because 123807933945 - 2¹ = 123807933943 is a prime.

It is a super-3 number, since 3×123807933945³ (a number of 34 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123807933891 and 123807933900.

It is not an unprimeable number, because it can be changed into a prime (123807933943) 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, 4192147 + ... + 4221576.

It is an arithmetic number, because the mean of its divisors is an integer number (6941322300).

Almost surely, 2^123807933945 is an apocalyptic number.

123807933945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123807933945 is a deficient number, since it is larger than the sum of its proper divisors (98314379655).

123807933945 is a wasteful number, since it uses less digits than its factorization.

123807933945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8413846 (or 8413840 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 54.

The spelling of 123807933945 in words is "one hundred twenty-three billion, eight hundred seven million, nine hundred thirty-three thousand, nine hundred forty-five".