2145185281737 has 8 divisors (see below), whose sum is σ = 3178052269280. Its totient is φ = 1430123521140.

The previous prime is 2145185281711. The next prime is 2145185281753. The reversal of 2145185281737 is 7371825815412.

2145185281737 is a `hidden beast` number, since 2 + 1 + 4 + 518 + 52 + 8 + 1 + 73 + 7 = 666.

It is not a de Polignac number, because 2145185281737 - 2¹⁶ = 2145185216201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2145185283737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39725653339 + ... + 39725653392.

It is an arithmetic number, because the mean of its divisors is an integer number (397256533660).

Almost surely, 2^{2145185281737} is an apocalyptic number.

2145185281737 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

2145185281737 is a deficient number, since it is larger than the sum of its proper divisors (1032866987543).

2145185281737 is an equidigital number, since it uses as much as digits as its factorization.

2145185281737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79451306740 (or 79451306734 counting only the distinct ones).

The product of its digits is 3763200, while the sum is 54.

The spelling of 2145185281737 in words is "two trillion, one hundred forty-five billion, one hundred eighty-five million, two hundred eighty-one thousand, seven hundred thirty-seven".