165056231355634 has 4 divisors (see below), whose sum is σ = 247584347033454. Its totient is φ = 82528115677816.

The previous prime is 165056231355619. The next prime is 165056231355637. The reversal of 165056231355634 is 436553132650561.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 120174981129225 + 44881250226409 = 10962435^2 + 6699347^2 .

It is not an unprimeable number, because it can be changed into a prime (165056231355637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41264057838907 + ... + 41264057838910.

Almost surely, 2^{165056231355634} is an apocalyptic number.

165056231355634 is a deficient number, since it is larger than the sum of its proper divisors (82528115677820).

165056231355634 is an equidigital number, since it uses as much as digits as its factorization.

165056231355634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82528115677819.

The product of its (nonzero) digits is 29160000, while the sum is 55.

The spelling of 165056231355634 in words is "one hundred sixty-five trillion, fifty-six billion, two hundred thirty-one million, three hundred fifty-five thousand, six hundred thirty-four".