161650161556035 has 64 divisors (see below), whose sum is σ = 260461913902080. Its totient is φ = 85608685693440.

The previous prime is 161650161556033. The next prime is 161650161556111. The reversal of 161650161556035 is 530655161056161.

It is not a de Polignac number, because 161650161556035 - 2¹ = 161650161556033 is a prime.

It is a super-3 number, since 3×161650161556035³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (161650161556033) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2051853345 + ... + 2051932125.

It is an arithmetic number, because the mean of its divisors is an integer number (4069717404720).

Almost surely, 2^{161650161556035} is an apocalyptic number.

161650161556035 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

161650161556035 is a deficient number, since it is larger than the sum of its proper divisors (98811752346045).

161650161556035 is a wasteful number, since it uses less digits than its factorization.

161650161556035 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80748.

The product of its (nonzero) digits is 2430000, while the sum is 51.

The spelling of 161650161556035 in words is "one hundred sixty-one trillion, six hundred fifty billion, one hundred sixty-one million, five hundred fifty-six thousand, thirty-five".