21452655126 has 32 divisors (see below), whose sum is σ = 49520141568. Its totient is φ = 6068642400.

The previous prime is 21452655101. The next prime is 21452655127. The reversal of 21452655126 is 62155625412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21452655127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2524360 + ... + 2532843.

It is an arithmetic number, because the mean of its divisors is an integer number (1547504424).

Almost surely, 2^21452655126 is an apocalyptic number.

21452655126 is an abundant number, since it is smaller than the sum of its proper divisors (28067486442).

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

21452655126 is a wasteful number, since it uses less digits than its factorization.

21452655126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5057316.

The product of its digits is 144000, while the sum is 39.

The spelling of 21452655126 in words is "twenty-one billion, four hundred fifty-two million, six hundred fifty-five thousand, one hundred twenty-six".