10521135530 has 8 divisors (see below), whose sum is σ = 18938043972. Its totient is φ = 4208454208.

The previous prime is 10521135517. The next prime is 10521135551. The reversal of 10521135530 is 3553112501.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10474089649 + 47045881 = 102343^2 + 6859^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×10521135530² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10521135530.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 526056767 + ... + 526056786.

Almost surely, 2^10521135530 is an apocalyptic number.

10521135530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10521135530 is a deficient number, since it is larger than the sum of its proper divisors (8416908442).

10521135530 is a wasteful number, since it uses less digits than its factorization.

10521135530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1052113560.

The product of its (nonzero) digits is 2250, while the sum is 26.

The spelling of 10521135530 in words is "ten billion, five hundred twenty-one million, one hundred thirty-five thousand, five hundred thirty".