21132583615 has 32 divisors (see below), whose sum is σ = 29812732992. Its totient is φ = 14177280000.

The previous prime is 21132583613. The next prime is 21132583621. The reversal of 21132583615 is 51638523112.

It is not a de Polignac number, because 21132583615 - 2¹ = 21132583613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21132583613) 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, 1135485 + ... + 1153945.

It is an arithmetic number, because the mean of its divisors is an integer number (931647906).

Almost surely, 2^21132583615 is an apocalyptic number.

21132583615 is a deficient number, since it is larger than the sum of its proper divisors (8680149377).

21132583615 is a wasteful number, since it uses less digits than its factorization.

21132583615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20091.

The product of its digits is 43200, while the sum is 37.

The spelling of 21132583615 in words is "twenty-one billion, one hundred thirty-two million, five hundred eighty-three thousand, six hundred fifteen".