645421162127 has 8 divisors (see below), whose sum is σ = 737662415136. Its totient is φ = 553189466592.

The previous prime is 645421162117. The next prime is 645421162151. The reversal of 645421162127 is 721261124546.

It is a happy number.

645421162127 is digitally balanced in base 2, because in such base 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 645421162127 - 2⁶ = 645421162063 is a prime.

It is a super-3 number, since 3×645421162127³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (645421162117) 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, 2244068 + ... + 2515289.

It is an arithmetic number, because the mean of its divisors is an integer number (92207801892).

Almost surely, 2^645421162127 is an apocalyptic number.

645421162127 is a deficient number, since it is larger than the sum of its proper divisors (92241253009).

645421162127 is a wasteful number, since it uses less digits than its factorization.

645421162127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4778737.

The product of its digits is 161280, while the sum is 41.

The spelling of 645421162127 in words is "six hundred forty-five billion, four hundred twenty-one million, one hundred sixty-two thousand, one hundred twenty-seven".