165761940315 has 16 divisors (see below), whose sum is σ = 273774560256. Its totient is φ = 85554549600.

The previous prime is 165761940257. The next prime is 165761940319. The reversal of 165761940315 is 513049167561.

It is a happy number.

It is not a de Polignac number, because 165761940315 - 2⁶ = 165761940251 is a prime.

It is not an unprimeable number, because it can be changed into a prime (165761940319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 178238181 + ... + 178239110.

It is an arithmetic number, because the mean of its divisors is an integer number (17110910016).

Almost surely, 2^165761940315 is an apocalyptic number.

165761940315 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

165761940315 is a deficient number, since it is larger than the sum of its proper divisors (108012619941).

165761940315 is a wasteful number, since it uses less digits than its factorization.

165761940315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356477330.

The product of its (nonzero) digits is 680400, while the sum is 48.

The spelling of 165761940315 in words is "one hundred sixty-five billion, seven hundred sixty-one million, nine hundred forty thousand, three hundred fifteen".