37812071345 has 4 divisors (see below), whose sum is σ = 45374485620. Its totient is φ = 30249657072.

The previous prime is 37812071329. The next prime is 37812071357. The reversal of 37812071345 is 54317021873.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54317021873 = 67 ⋅810701819.

It can be written as a sum of positive squares in 2 ways, for example, as 28571478961 + 9240592384 = 169031^2 + 96128^2 .

It is a cyclic number.

It is not a de Polignac number, because 37812071345 - 2⁴ = 37812071329 is a prime.

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, 3781207130 + ... + 3781207139.

It is an arithmetic number, because the mean of its divisors is an integer number (11343621405).

Almost surely, 2^37812071345 is an apocalyptic number.

It is an amenable number.

37812071345 is a deficient number, since it is larger than the sum of its proper divisors (7562414275).

37812071345 is an equidigital number, since it uses as much as digits as its factorization.

37812071345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7562414274.

The product of its (nonzero) digits is 141120, while the sum is 41.

The spelling of 37812071345 in words is "thirty-seven billion, eight hundred twelve million, seventy-one thousand, three hundred forty-five".