648345921087 has 8 divisors (see below), whose sum is σ = 864822483504. Its totient is φ = 432049986368.

The previous prime is 648345921073. The next prime is 648345921133. The reversal of 648345921087 is 780129543846.

It is a happy number.

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 648345921087 - 2⁶ = 648345921023 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648345922087) 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, 45148548 + ... + 45162905.

It is an arithmetic number, because the mean of its divisors is an integer number (108102810438).

It is a 1-persistent number, because it is pandigital, but 2⋅648345921087 = 1296691842174 is not.

Almost surely, 2^648345921087 is an apocalyptic number.

648345921087 is a deficient number, since it is larger than the sum of its proper divisors (216476562417).

648345921087 is a wasteful number, since it uses less digits than its factorization.

648345921087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90313849.

The product of its (nonzero) digits is 11612160, while the sum is 57.

The spelling of 648345921087 in words is "six hundred forty-eight billion, three hundred forty-five million, nine hundred twenty-one thousand, eighty-seven".