21580167719253 has 32 divisors (see below), whose sum is σ = 34969550797440. Its totient is φ = 11656516919040.

The previous prime is 21580167719249. The next prime is 21580167719321. The reversal of 21580167719253 is 35291776108512.

It is not a de Polignac number, because 21580167719253 - 2² = 21580167719249 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21580167719193 and 21580167719202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21580167719753) 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, 867287926 + ... + 867312807.

It is an arithmetic number, because the mean of its divisors is an integer number (1092798462420).

Almost surely, 2^{21580167719253} is an apocalyptic number.

It is an amenable number.

21580167719253 is a deficient number, since it is larger than the sum of its proper divisors (13389383078187).

21580167719253 is a wasteful number, since it uses less digits than its factorization.

21580167719253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1734600789.

The product of its (nonzero) digits is 6350400, while the sum is 57.

The spelling of 21580167719253 in words is "twenty-one trillion, five hundred eighty billion, one hundred sixty-seven million, seven hundred nineteen thousand, two hundred fifty-three".