161433965375 has 32 divisors (see below), whose sum is σ = 205577206848. Its totient is φ = 126521366400.

The previous prime is 161433965347. The next prime is 161433965377. The reversal of 161433965375 is 573569334161.

It is not a de Polignac number, because 161433965375 - 2¹² = 161433961279 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161433965377) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4507037 + ... + 4542713.

It is an arithmetic number, because the mean of its divisors is an integer number (6424287714).

Almost surely, 2^161433965375 is an apocalyptic number.

161433965375 is a deficient number, since it is larger than the sum of its proper divisors (44143241473).

161433965375 is an equidigital number, since it uses as much as digits as its factorization.

161433965375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36428 (or 36418 counting only the distinct ones).

The product of its digits is 6123600, while the sum is 53.

The spelling of 161433965375 in words is "one hundred sixty-one billion, four hundred thirty-three million, nine hundred sixty-five thousand, three hundred seventy-five".