673565881548 has 48 divisors (see below), whose sum is σ = 1901833081344. Its totient is φ = 181126959360.

The previous prime is 673565881537. The next prime is 673565881559. The reversal of 673565881548 is 845188565376.

It is an interprime number because it is at equal distance from previous prime (673565881537) and next prime (673565881559).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 235840968 + ... + 235843823.

It is an arithmetic number, because the mean of its divisors is an integer number (39621522528).

Almost surely, 2^673565881548 is an apocalyptic number.

673565881548 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

673565881548 is an abundant number, since it is smaller than the sum of its proper divisors (1228267199796).

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

673565881548 is a wasteful number, since it uses less digits than its factorization.

673565881548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471684822 (or 471684820 counting only the distinct ones).

The product of its digits is 193536000, while the sum is 66.

The spelling of 673565881548 in words is "six hundred seventy-three billion, five hundred sixty-five million, eight hundred eighty-one thousand, five hundred forty-eight".