204624505609990 has 64 divisors (see below), whose sum is σ = 372696259440960. Its totient is φ = 80880849100800.

The previous prime is 204624505609973. The next prime is 204624505610017. The reversal of 204624505609990 is 99906505426402.

It is a super-2 number, since 2×204624505609990² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9331217346 + ... + 9331239274.

It is an arithmetic number, because the mean of its divisors is an integer number (5823379053765).

Almost surely, 2^{204624505609990} is an apocalyptic number.

204624505609990 is a deficient number, since it is larger than the sum of its proper divisors (168071753830970).

204624505609990 is a wasteful number, since it uses less digits than its factorization.

204624505609990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36457.

The product of its (nonzero) digits is 41990400, while the sum is 61.

The spelling of 204624505609990 in words is "two hundred four trillion, six hundred twenty-four billion, five hundred five million, six hundred nine thousand, nine hundred ninety".