165389037912903 has 8 divisors (see below), whose sum is σ = 252021391105408. Its totient is φ = 94508021664504.

The previous prime is 165389037912887. The next prime is 165389037912929. The reversal of 165389037912903 is 309219730983561.

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

It is not a de Polignac number, because 165389037912903 - 2⁴ = 165389037912887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165389037962903) 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, 3937834236001 + ... + 3937834236042.

It is an arithmetic number, because the mean of its divisors is an integer number (31502673888176).

Almost surely, 2^{165389037912903} is an apocalyptic number.

165389037912903 is a deficient number, since it is larger than the sum of its proper divisors (86632353192505).

165389037912903 is an equidigital number, since it uses as much as digits as its factorization.

165389037912903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7875668472053.

The product of its (nonzero) digits is 66134880, while the sum is 66.

The spelling of 165389037912903 in words is "one hundred sixty-five trillion, three hundred eighty-nine billion, thirty-seven million, nine hundred twelve thousand, nine hundred three".