1648485637780 has 24 divisors (see below), whose sum is σ = 3462317591040. Its totient is φ = 659299445280.

The previous prime is 1648485637741. The next prime is 1648485637781. The reversal of 1648485637780 is 877365848461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1648485637781) 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, 5782956 + ... + 6061315.

It is an arithmetic number, because the mean of its divisors is an integer number (144263232960).

Almost surely, 2^{1648485637780} is an apocalyptic number.

1648485637780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1648485637780 is an abundant number, since it is smaller than the sum of its proper divisors (1813831953260).

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

1648485637780 is a wasteful number, since it uses less digits than its factorization.

1648485637780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11851239 (or 11851237 counting only the distinct ones).

The product of its (nonzero) digits is 216760320, while the sum is 67.

The spelling of 1648485637780 in words is "one trillion, six hundred forty-eight billion, four hundred eighty-five million, six hundred thirty-seven thousand, seven hundred eighty".