5400660123 has 12 divisors (see below), whose sum is σ = 8001543720. Its totient is φ = 3600185508.

The previous prime is 5400660101. The next prime is 5400660163. The reversal of 5400660123 is 3210660045.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

5400660123 is a `hidden beast` number, since 54 + 0 + 0 + 6 + 601 + 2 + 3 = 666.

It is not a de Polignac number, because 5400660123 - 2⁹ = 5400659611 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (5400660163) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 374790 + ... + 388932.

It is an arithmetic number, because the mean of its divisors is an integer number (666795310).

Almost surely, 2^5400660123 is an apocalyptic number.

5400660123 is a deficient number, since it is larger than the sum of its proper divisors (2600883597).

5400660123 is an frugal number, since it uses more digits than its factorization.

5400660123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28295 (or 14146 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 5400660123 is about 73489.1837143399. The cubic root of 5400660123 is about 1754.4821293245.

Multiplying 5400660123 by its sum of digits (27), we get a square (145817823321 = 381861²).

5400660123 divided by its sum of digits (27) gives a square (200024449 = 14143²).

The spelling of 5400660123 in words is "five billion, four hundred million, six hundred sixty thousand, one hundred twenty-three".