21375123754713 has 8 divisors (see below), whose sum is σ = 28622483311968. Its totient is φ = 14188923350304.

The previous prime is 21375123754697. The next prime is 21375123754759. The reversal of 21375123754713 is 31745732157312.

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

It is not a de Polignac number, because 21375123754713 - 2⁴ = 21375123754697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21375123754513) 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, 15289787395 + ... + 15289788792.

It is an arithmetic number, because the mean of its divisors is an integer number (3577810413996).

Almost surely, 2^{21375123754713} is an apocalyptic number.

It is an amenable number.

21375123754713 is a deficient number, since it is larger than the sum of its proper divisors (7247359557255).

21375123754713 is a wasteful number, since it uses less digits than its factorization.

21375123754713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30579576423.

The product of its digits is 3704400, while the sum is 51.

The spelling of 21375123754713 in words is "twenty-one trillion, three hundred seventy-five billion, one hundred twenty-three million, seven hundred fifty-four thousand, seven hundred thirteen".