17620268638 has 16 divisors (see below), whose sum is σ = 30517581024. Its totient is φ = 7473692160.

The previous prime is 17620268623. The next prime is 17620268641. The reversal of 17620268638 is 83686202671.

It is a junction number, because it is equal to n+sod(n) for n = 17620268591 and 17620268600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6486223 + ... + 6488938.

It is an arithmetic number, because the mean of its divisors is an integer number (1907348814).

Almost surely, 2^17620268638 is an apocalyptic number.

17620268638 is a deficient number, since it is larger than the sum of its proper divisors (12897312386).

17620268638 is a wasteful number, since it uses less digits than its factorization.

17620268638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12975267.

The product of its (nonzero) digits is 1161216, while the sum is 49.

The spelling of 17620268638 in words is "seventeen billion, six hundred twenty million, two hundred sixty-eight thousand, six hundred thirty-eight".