21452053413 has 32 divisors (see below), whose sum is σ = 33811456000. Its totient is φ = 11838934080.

The previous prime is 21452053411. The next prime is 21452053433. The reversal of 21452053413 is 31435025412.

It is not a de Polignac number, because 21452053413 - 2¹ = 21452053411 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21452053411) 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, 291831 + ... + 357867.

It is an arithmetic number, because the mean of its divisors is an integer number (1056608000).

Almost surely, 2^21452053413 is an apocalyptic number.

It is an amenable number.

21452053413 is a deficient number, since it is larger than the sum of its proper divisors (12359402587).

21452053413 is a wasteful number, since it uses less digits than its factorization.

21452053413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66577.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 21452053413 its reverse (31435025412), we get a palindrome (52887078825).

The spelling of 21452053413 in words is "twenty-one billion, four hundred fifty-two million, fifty-three thousand, four hundred thirteen".