32378288405 has 4 divisors (see below), whose sum is σ = 38853946092. Its totient is φ = 25902630720.

The previous prime is 32378288323. The next prime is 32378288419. The reversal of 32378288405 is 50488287323.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50488287323 = 62701 ⋅805223.

It can be written as a sum of positive squares in 2 ways, for example, as 10848888964 + 21529399441 = 104158^2 + 146729^2 .

It is not a de Polignac number, because 32378288405 - 2¹⁶ = 32378222869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3237828836 + ... + 3237828845.

It is an arithmetic number, because the mean of its divisors is an integer number (9713486523).

Almost surely, 2^32378288405 is an apocalyptic number.

It is an amenable number.

32378288405 is a deficient number, since it is larger than the sum of its proper divisors (6475657687).

32378288405 is an equidigital number, since it uses as much as digits as its factorization.

32378288405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6475657686.

The product of its (nonzero) digits is 2580480, while the sum is 50.

The spelling of 32378288405 in words is "thirty-two billion, three hundred seventy-eight million, two hundred eighty-eight thousand, four hundred five".