645307625414 has 4 divisors (see below), whose sum is σ = 967961438124. Its totient is φ = 322653812706.

The previous prime is 645307625401. The next prime is 645307625429. The reversal of 645307625414 is 414526703546.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161326906352 + ... + 161326906355.

It is an arithmetic number, because the mean of its divisors is an integer number (241990359531).

Almost surely, 2^645307625414 is an apocalyptic number.

645307625414 is a deficient number, since it is larger than the sum of its proper divisors (322653812710).

645307625414 is a wasteful number, since it uses less digits than its factorization.

645307625414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322653812709.

The product of its (nonzero) digits is 2419200, while the sum is 47.

It can be divided in two parts, 645307 and 625414, that added together give a palindrome (1270721).

The spelling of 645307625414 in words is "six hundred forty-five billion, three hundred seven million, six hundred twenty-five thousand, four hundred fourteen".