37782321505 has 4 divisors (see below), whose sum is σ = 45338785812. Its totient is φ = 30225857200.

The previous prime is 37782321481. The next prime is 37782321547. The reversal of 37782321505 is 50512328773.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26008335441 + 11773986064 = 161271^2 + 108508^2 .

It is not a de Polignac number, because 37782321505 - 2¹³ = 37782313313 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3778232146 + ... + 3778232155.

It is an arithmetic number, because the mean of its divisors is an integer number (11334696453).

Almost surely, 2^37782321505 is an apocalyptic number.

It is an amenable number.

37782321505 is a deficient number, since it is larger than the sum of its proper divisors (7556464307).

37782321505 is an equidigital number, since it uses as much as digits as its factorization.

37782321505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7556464306.

The product of its (nonzero) digits is 352800, while the sum is 43.

The spelling of 37782321505 in words is "thirty-seven billion, seven hundred eighty-two million, three hundred twenty-one thousand, five hundred five".