19941724053 has 12 divisors (see below), whose sum is σ = 29797978860. Its totient is φ = 12836052096.

The previous prime is 19941724039. The next prime is 19941724067. The reversal of 19941724053 is 35042714991.

19941724053 is a `hidden beast` number, since 199 + 417 + 2 + 40 + 5 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (19941724039) and next prime (19941724067).

It can be written as a sum of positive squares in 2 ways, for example, as 4981254084 + 14960469969 = 70578^2 + 122313^2 .

It is not a de Polignac number, because 19941724053 - 2⁸ = 19941723797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19941724003) 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, 38202276 + ... + 38202797.

It is an arithmetic number, because the mean of its divisors is an integer number (2483164905).

Almost surely, 2^19941724053 is an apocalyptic number.

It is an amenable number.

19941724053 is a deficient number, since it is larger than the sum of its proper divisors (9856254807).

19941724053 is a wasteful number, since it uses less digits than its factorization.

19941724053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76405108 (or 76405105 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The spelling of 19941724053 in words is "nineteen billion, nine hundred forty-one million, seven hundred twenty-four thousand, fifty-three".