2150651643165 has 12 divisors (see below), whose sum is σ = 3727796181564. Its totient is φ = 1147014209664.

The previous prime is 2150651643109. The next prime is 2150651643187. The reversal of 2150651643165 is 5613461560512.

2150651643165 is a `hidden beast` number, since 2 + 1 + 506 + 51 + 6 + 4 + 31 + 65 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1223848800729 + 926802842436 = 1106277^2 + 962706^2 .

It is not a de Polignac number, because 2150651643165 - 2¹⁶ = 2150651577629 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 47792258737 = 2150651643165 / (2 + 1 + 5 + 0 + 6 + 5 + 1 + 6 + 4 + 3 + 1 + 6 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 2150651643165.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23896129324 + ... + 23896129413.

It is an arithmetic number, because the mean of its divisors is an integer number (310649681797).

Almost surely, 2^{2150651643165} is an apocalyptic number.

It is an amenable number.

2150651643165 is a deficient number, since it is larger than the sum of its proper divisors (1577144538399).

2150651643165 is a wasteful number, since it uses less digits than its factorization.

2150651643165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47792258748 (or 47792258745 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 45.

The spelling of 2150651643165 in words is "two trillion, one hundred fifty billion, six hundred fifty-one million, six hundred forty-three thousand, one hundred sixty-five".