21546536152 has 32 divisors (see below), whose sum is σ = 42086595600. Its totient is φ = 10332352000.

The previous prime is 21546536107. The next prime is 21546536153. The reversal of 21546536152 is 25163564512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21546536153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 537349 + ... + 576052.

Almost surely, 2^21546536152 is an apocalyptic number.

It is an amenable number.

21546536152 is a deficient number, since it is larger than the sum of its proper divisors (20540059448).

21546536152 is a wasteful number, since it uses less digits than its factorization.

21546536152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1113507 (or 1113503 counting only the distinct ones).

The product of its digits is 216000, while the sum is 40.

The spelling of 21546536152 in words is "twenty-one billion, five hundred forty-six million, five hundred thirty-six thousand, one hundred fifty-two".