21036242532 has 48 divisors (see below), whose sum is σ = 49404600000. Its totient is φ = 6966435840.

The previous prime is 21036242531. The next prime is 21036242533. The reversal of 21036242532 is 23524263012.

It is an interprime number because it is at equal distance from previous prime (21036242531) and next prime (21036242533).

It is a self number, because there is not a number n which added to its sum of digits gives 21036242532.

It is not an unprimeable number, because it can be changed into a prime (21036242531) 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, 2678932 + ... + 2686772.

It is an arithmetic number, because the mean of its divisors is an integer number (1029262500).

Almost surely, 2^21036242532 is an apocalyptic number.

It is an amenable number.

21036242532 is an abundant number, since it is smaller than the sum of its proper divisors (28368357468).

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

21036242532 is a wasteful number, since it uses less digits than its factorization.

21036242532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9276 (or 9274 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

The spelling of 21036242532 in words is "twenty-one billion, thirty-six million, two hundred forty-two thousand, five hundred thirty-two".