17621307052 has 12 divisors (see below), whose sum is σ = 30844517256. Its totient is φ = 8808587840.

The previous prime is 17621306959. The next prime is 17621307059. The reversal of 17621307052 is 25070312671.

It is a junction number, because it is equal to n+sod(n) for n = 17621306999 and 17621307017.

It is not an unprimeable number, because it can be changed into a prime (17621307059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 497149 + ... + 531412.

It is an arithmetic number, because the mean of its divisors is an integer number (2570376438).

Almost surely, 2^17621307052 is an apocalyptic number.

It is an amenable number.

17621307052 is a deficient number, since it is larger than the sum of its proper divisors (13223210204).

17621307052 is a wasteful number, since it uses less digits than its factorization.

17621307052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1032848 (or 1032846 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 34.

The spelling of 17621307052 in words is "seventeen billion, six hundred twenty-one million, three hundred seven thousand, fifty-two".