21748745238027 has 8 divisors (see below), whose sum is σ = 29431137834816. Its totient is φ = 14282758066632.

The previous prime is 21748745237977. The next prime is 21748745238079. The reversal of 21748745238027 is 72083254784712.

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

It is not a de Polignac number, because 21748745238027 - 2¹⁵ = 21748745205259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21748745228027) 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, 54101356113 + ... + 54101356514.

It is an arithmetic number, because the mean of its divisors is an integer number (3678892229352).

Almost surely, 2^{21748745238027} is an apocalyptic number.

21748745238027 is a deficient number, since it is larger than the sum of its proper divisors (7682392596789).

21748745238027 is a wasteful number, since it uses less digits than its factorization.

21748745238027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108202712697.

The product of its (nonzero) digits is 42147840, while the sum is 60.

The spelling of 21748745238027 in words is "twenty-one trillion, seven hundred forty-eight billion, seven hundred forty-five million, two hundred thirty-eight thousand, twenty-seven".