32161391399 has 2 divisors, whose sum is σ = 32161391400. Its totient is φ = 32161391398.

The previous prime is 32161391393. The next prime is 32161391419. The reversal of 32161391399 is 99319316123.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (99319316123) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 32161391399 - 2¹² = 32161387303 is a prime.

It is a super-3 number, since 3×32161391399³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32161391393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16080695699 + 16080695700.

It is an arithmetic number, because the mean of its divisors is an integer number (16080695700).

Almost surely, 2^32161391399 is an apocalyptic number.

32161391399 is a deficient number, since it is larger than the sum of its proper divisors (1).

32161391399 is an equidigital number, since it uses as much as digits as its factorization.

32161391399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 236196, while the sum is 47.

The spelling of 32161391399 in words is "thirty-two billion, one hundred sixty-one million, three hundred ninety-one thousand, three hundred ninety-nine".