2151525853187 has 4 divisors (see below), whose sum is σ = 2151803799936. Its totient is φ = 2151247906440.

The previous prime is 2151525853163. The next prime is 2151525853229. The reversal of 2151525853187 is 7813585251512.

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

It is a cyclic number.

It is not a de Polignac number, because 2151525853187 - 2⁶ = 2151525853123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2151525853787) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138961763 + ... + 138977244.

It is an arithmetic number, because the mean of its divisors is an integer number (537950949984).

Almost surely, 2^{2151525853187} is an apocalyptic number.

2151525853187 is a deficient number, since it is larger than the sum of its proper divisors (277946749).

2151525853187 is an equidigital number, since it uses as much as digits as its factorization.

2151525853187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277946748.

The product of its digits is 3360000, while the sum is 53.

The spelling of 2151525853187 in words is "two trillion, one hundred fifty-one billion, five hundred twenty-five million, eight hundred fifty-three thousand, one hundred eighty-seven".