648357753846 has 16 divisors (see below), whose sum is σ = 1414598735808. Its totient is φ = 196472046600.

The previous prime is 648357753839. The next prime is 648357753847.

648357753846 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (66), and also a Moran number because the ratio is a prime number: 9823602331 = 648357753846 / (6 + 4 + 8 + 3 + 5 + 7 + 7 + 5 + 3 + 8 + 4 + 6).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648357753847) 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, 4911801100 + ... + 4911801231.

It is an arithmetic number, because the mean of its divisors is an integer number (88412420988).

Almost surely, 2^648357753846 is an apocalyptic number.

648357753846 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

648357753846 is an abundant number, since it is smaller than the sum of its proper divisors (766240981962).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

648357753846 is a wasteful number, since it uses less digits than its factorization.

648357753846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9823602347.

The product of its digits is 406425600, while the sum is 66.

The spelling of 648357753846 in words is "six hundred forty-eight billion, three hundred fifty-seven million, seven hundred fifty-three thousand, eight hundred forty-six".