21152535050 has 12 divisors (see below), whose sum is σ = 39343715286. Its totient is φ = 8461014000.

The previous prime is 21152534993. The next prime is 21152535113. The reversal of 21152535050 is 5053525112.

It can be written as a sum of positive squares in 3 ways, for example, as 14685319489 + 6467215561 = 121183^2 + 80419^2 .

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 211525301 + ... + 211525400.

Almost surely, 2^21152535050 is an apocalyptic number.

21152535050 is a deficient number, since it is larger than the sum of its proper divisors (18191180236).

21152535050 is a wasteful number, since it uses less digits than its factorization.

21152535050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423050713 (or 423050708 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 29.

The spelling of 21152535050 in words is "twenty-one billion, one hundred fifty-two million, five hundred thirty-five thousand, fifty".