204171077657126 has 8 divisors (see below), whose sum is σ = 308312030019600. Its totient is φ = 101400400983928.

The previous prime is 204171077657117. The next prime is 204171077657143. The reversal of 204171077657126 is 621756770171402.

It is a happy number.

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

It is a congruent number.

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, 342568921946 + ... + 342568922541.

It is an arithmetic number, because the mean of its divisors is an integer number (38539003752450).

Almost surely, 2^{204171077657126} is an apocalyptic number.

204171077657126 is a deficient number, since it is larger than the sum of its proper divisors (104140952362474).

204171077657126 is a wasteful number, since it uses less digits than its factorization.

204171077657126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685137844638.

The product of its (nonzero) digits is 6914880, while the sum is 56.

The spelling of 204171077657126 in words is "two hundred four trillion, one hundred seventy-one billion, seventy-seven million, six hundred fifty-seven thousand, one hundred twenty-six".