645420760151 has 8 divisors (see below), whose sum is σ = 666255848064. Its totient is φ = 624586613760.

The previous prime is 645420760079. The next prime is 645420760169. The reversal of 645420760151 is 151067024546.

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

It is a cyclic number.

It is not a de Polignac number, because 645420760151 - 2¹⁴ = 645420743767 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 645420760099 and 645420760108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (645420760351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1321271 + ... + 1742583.

It is an arithmetic number, because the mean of its divisors is an integer number (83281981008).

Almost surely, 2^645420760151 is an apocalyptic number.

645420760151 is a deficient number, since it is larger than the sum of its proper divisors (20835087913).

645420760151 is a wasteful number, since it uses less digits than its factorization.

645420760151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470761.

The product of its (nonzero) digits is 201600, while the sum is 41.

Adding to 645420760151 its reverse (151067024546), we get a palindrome (796487784697).

The spelling of 645420760151 in words is "six hundred forty-five billion, four hundred twenty million, seven hundred sixty thousand, one hundred fifty-one".