21035510032 has 20 divisors (see below), whose sum is σ = 40783645260. Its totient is φ = 10510698368.

The previous prime is 21035510017. The next prime is 21035510057. The reversal of 21035510032 is 23001553012.

It can be written as a sum of positive squares in 2 ways, for example, as 18543902976 + 2491607056 = 136176^2 + 49916^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21035509985 and 21035510012.

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, 416407 + ... + 464182.

It is an arithmetic number, because the mean of its divisors is an integer number (2039182263).

Almost surely, 2^21035510032 is an apocalyptic number.

It is an amenable number.

21035510032 is a deficient number, since it is larger than the sum of its proper divisors (19748135228).

21035510032 is a wasteful number, since it uses less digits than its factorization.

21035510032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 882090 (or 882084 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

The spelling of 21035510032 in words is "twenty-one billion, thirty-five million, five hundred ten thousand, thirty-two".