21254054000452 has 24 divisors (see below), whose sum is σ = 45777962463296. Its totient is φ = 8408197186848.

The previous prime is 21254054000447. The next prime is 21254054000471. The reversal of 21254054000452 is 25400045045212.

It is a super-2 number, since 2×21254054000452² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29195128758 + ... + 29195129485.

Almost surely, 2^{21254054000452} is an apocalyptic number.

It is an amenable number.

21254054000452 is an abundant number, since it is smaller than the sum of its proper divisors (24523908462844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21254054000452 is a wasteful number, since it uses less digits than its factorization.

21254054000452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58390258267 (or 58390258265 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 34.

Adding to 21254054000452 its reverse (25400045045212), we get a palindrome (46654099045664).

The spelling of 21254054000452 in words is "twenty-one trillion, two hundred fifty-four billion, fifty-four million, four hundred fifty-two", and thus it is an aban number.