32489866261 has 2 divisors, whose sum is σ = 32489866262. Its totient is φ = 32489866260.

The previous prime is 32489866229. The next prime is 32489866289. The reversal of 32489866261 is 16266898423.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31499505361 + 990360900 = 177481^2 + 31470^2 .

It is a cyclic number.

It is not a de Polignac number, because 32489866261 - 2⁵ = 32489866229 is a prime.

It is a super-2 number, since 2×32489866261² (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 (32489866361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16244933130 + 16244933131.

It is an arithmetic number, because the mean of its divisors is an integer number (16244933131).

Almost surely, 2^32489866261 is an apocalyptic number.

It is an amenable number.

32489866261 is a deficient number, since it is larger than the sum of its proper divisors (1).

32489866261 is an equidigital number, since it uses as much as digits as its factorization.

32489866261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5971968, while the sum is 55.

The spelling of 32489866261 in words is "thirty-two billion, four hundred eighty-nine million, eight hundred sixty-six thousand, two hundred sixty-one".