161494828147 has 4 divisors (see below), whose sum is σ = 162206259336. Its totient is φ = 160783396960.

The previous prime is 161494828129. The next prime is 161494828151. The reversal of 161494828147 is 741828494161.

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

It is a cyclic number.

It is not a de Polignac number, because 161494828147 - 2³⁵ = 127135089779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161494828247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 355715254 + ... + 355715707.

It is an arithmetic number, because the mean of its divisors is an integer number (40551564834).

Almost surely, 2^161494828147 is an apocalyptic number.

161494828147 is a deficient number, since it is larger than the sum of its proper divisors (711431189).

161494828147 is an equidigital number, since it uses as much as digits as its factorization.

161494828147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711431188.

The product of its digits is 3096576, while the sum is 55.

The spelling of 161494828147 in words is "one hundred sixty-one billion, four hundred ninety-four million, eight hundred twenty-eight thousand, one hundred forty-seven".