645730734327177 has 8 divisors (see below), whose sum is σ = 906288749932960. Its totient is φ = 407829937469760.

The previous prime is 645730734327113. The next prime is 645730734327187. The reversal of 645730734327177 is 771723437037546.

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

It is not a de Polignac number, because 645730734327177 - 2⁶ = 645730734327113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (645730734327187) 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, 5664304687024 + ... + 5664304687137.

It is an arithmetic number, because the mean of its divisors is an integer number (113286093741620).

Almost surely, 2^{645730734327177} is an apocalyptic number.

It is an amenable number.

645730734327177 is a deficient number, since it is larger than the sum of its proper divisors (260558015605783).

645730734327177 is a wasteful number, since it uses less digits than its factorization.

645730734327177 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11328609374183.

The product of its (nonzero) digits is 435637440, while the sum is 66.

The spelling of 645730734327177 in words is "six hundred forty-five trillion, seven hundred thirty billion, seven hundred thirty-four million, three hundred twenty-seven thousand, one hundred seventy-seven".