32894769581 has 2 divisors, whose sum is σ = 32894769582. Its totient is φ = 32894769580.

The previous prime is 32894769577. The next prime is 32894769601. The reversal of 32894769581 is 18596749823.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31447347556 + 1447422025 = 177334^2 + 38045^2 .

It is a cyclic number.

It is not a de Polignac number, because 32894769581 - 2² = 32894769577 is a prime.

It is a super-2 number, since 2×32894769581² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32894769181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16447384790 + 16447384791.

It is an arithmetic number, because the mean of its divisors is an integer number (16447384791).

Almost surely, 2^32894769581 is an apocalyptic number.

It is an amenable number.

32894769581 is a deficient number, since it is larger than the sum of its proper divisors (1).

32894769581 is an equidigital number, since it uses as much as digits as its factorization.

32894769581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26127360, while the sum is 62.

The spelling of 32894769581 in words is "thirty-two billion, eight hundred ninety-four million, seven hundred sixty-nine thousand, five hundred eighty-one".