32161392947 has 2 divisors, whose sum is σ = 32161392948. Its totient is φ = 32161392946.

The previous prime is 32161392943. The next prime is 32161393007. The reversal of 32161392947 is 74929316123.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 32161392947 - 2² = 32161392943 is a prime.

It is not a weakly prime, because it can be changed into another prime (32161392943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16080696473 + 16080696474.

It is an arithmetic number, because the mean of its divisors is an integer number (16080696474).

Almost surely, 2^32161392947 is an apocalyptic number.

32161392947 is a deficient number, since it is larger than the sum of its proper divisors (1).

32161392947 is an equidigital number, since it uses as much as digits as its factorization.

32161392947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 489888, while the sum is 47.

The spelling of 32161392947 in words is "thirty-two billion, one hundred sixty-one million, three hundred ninety-two thousand, nine hundred forty-seven".