204747906677 has 8 divisors (see below), whose sum is σ = 217271177280. Its totient is φ = 192526401760.

The previous prime is 204747906661. The next prime is 204747906683. The reversal of 204747906677 is 776609747402.

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

It is not a de Polignac number, because 204747906677 - 2⁴ = 204747906661 is a prime.

It is a super-2 number, since 2×204747906677² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (59).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204747903677) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75440024 + ... + 75442737.

It is an arithmetic number, because the mean of its divisors is an integer number (27158897160).

Almost surely, 2^204747906677 is an apocalyptic number.

It is an amenable number.

204747906677 is a deficient number, since it is larger than the sum of its proper divisors (12523270603).

204747906677 is a wasteful number, since it uses less digits than its factorization.

204747906677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150882843.

The product of its (nonzero) digits is 24893568, while the sum is 59.

The spelling of 204747906677 in words is "two hundred four billion, seven hundred forty-seven million, nine hundred six thousand, six hundred seventy-seven".