645163531462 has 8 divisors (see below), whose sum is σ = 968715957456. Its totient is φ = 322258212312.

The previous prime is 645163531457. The next prime is 645163531469. The reversal of 645163531462 is 264135361546.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (645163531469) 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, 161774218 + ... + 161778205.

It is an arithmetic number, because the mean of its divisors is an integer number (121089494682).

Almost surely, 2^645163531462 is an apocalyptic number.

645163531462 is a deficient number, since it is larger than the sum of its proper divisors (323552425994).

645163531462 is a wasteful number, since it uses less digits than its factorization.

645163531462 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323553422.

The product of its digits is 1555200, while the sum is 46.

The spelling of 645163531462 in words is "six hundred forty-five billion, one hundred sixty-three million, five hundred thirty-one thousand, four hundred sixty-two".