161436404412445 has 16 divisors (see below), whose sum is σ = 205140297871728. Its totient is φ = 121539611566080.

The previous prime is 161436404412431. The next prime is 161436404412499. The reversal of 161436404412445 is 544214404634161.

161436404412445 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 45925262205124 + 115511142207321 = 6776818^2 + 10747611^2 .

It is not a de Polignac number, because 161436404412445 - 2⁴⁷ = 20698916057117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96861804 + ... + 98514373.

It is an arithmetic number, because the mean of its divisors is an integer number (12821268616983).

Almost surely, 2^{161436404412445} is an apocalyptic number.

It is an amenable number.

161436404412445 is a deficient number, since it is larger than the sum of its proper divisors (43703893459283).

161436404412445 is a wasteful number, since it uses less digits than its factorization.

161436404412445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195385920.

The product of its (nonzero) digits is 4423680, while the sum is 49.

The spelling of 161436404412445 in words is "one hundred sixty-one trillion, four hundred thirty-six billion, four hundred four million, four hundred twelve thousand, four hundred forty-five".