161532433445 has 8 divisors (see below), whose sum is σ = 197124325920. Its totient is φ = 127035676240.

The previous prime is 161532433397. The next prime is 161532433457. The reversal of 161532433445 is 544334235161.

It is a happy number.

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

It is not a de Polignac number, because 161532433445 - 2¹² = 161532429349 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 273783491 + ... + 273784080.

It is an arithmetic number, because the mean of its divisors is an integer number (24640540740).

Almost surely, 2^161532433445 is an apocalyptic number.

It is an amenable number.

161532433445 is a deficient number, since it is larger than the sum of its proper divisors (35591892475).

161532433445 is an equidigital number, since it uses as much as digits as its factorization.

161532433445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547567635.

The product of its digits is 518400, while the sum is 41.

The spelling of 161532433445 in words is "one hundred sixty-one billion, five hundred thirty-two million, four hundred thirty-three thousand, four hundred forty-five".