645116631153 has 8 divisors (see below), whose sum is σ = 860296058016. Its totient is φ = 430007479200.

The previous prime is 645116631149. The next prime is 645116631191. The reversal of 645116631153 is 351136611546.

645116631153 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 645116631153 - 2² = 645116631149 is a prime.

It is not an unprimeable number, because it can be changed into a prime (645116631053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17547303 + ... + 17584028.

It is an arithmetic number, because the mean of its divisors is an integer number (107537007252).

Almost surely, 2^645116631153 is an apocalyptic number.

It is an amenable number.

645116631153 is a deficient number, since it is larger than the sum of its proper divisors (215179426863).

645116631153 is a wasteful number, since it uses less digits than its factorization.

645116631153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35137455.

The product of its digits is 194400, while the sum is 42.

The spelling of 645116631153 in words is "six hundred forty-five billion, one hundred sixteen million, six hundred thirty-one thousand, one hundred fifty-three".