2144002153257 has 36 divisors (see below), whose sum is σ = 3396032431740. Its totient is φ = 1298868028416.

The previous prime is 2144002153253. The next prime is 2144002153331. The reversal of 2144002153257 is 7523512004412.

2144002153257 is a `hidden beast` number, since 2 + 1 + 4 + 400 + 215 + 32 + 5 + 7 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 483677129961 + 1660325023296 = 695469^2 + 1288536^2 .

It is not a de Polignac number, because 2144002153257 - 2² = 2144002153253 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2144002153253) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 8202532 + ... + 8459877.

It is an arithmetic number, because the mean of its divisors is an integer number (94334234215).

Almost surely, 2^{2144002153257} is an apocalyptic number.

It is an amenable number.

2144002153257 is a deficient number, since it is larger than the sum of its proper divisors (1252030278483).

2144002153257 is a wasteful number, since it uses less digits than its factorization.

2144002153257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16662490 (or 16662458 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

Adding to 2144002153257 its reverse (7523512004412), we get a palindrome (9667514157669).

The spelling of 2144002153257 in words is "two trillion, one hundred forty-four billion, two million, one hundred fifty-three thousand, two hundred fifty-seven".