673616426340 has 384 divisors, whose sum is σ = 2308822548480. Its totient is φ = 144507340800.

The previous prime is 673616426333. The next prime is 673616426359. The reversal of 673616426340 is 43624616376.

It is a self number, because there is not a number n which added to its sum of digits gives 673616426340.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 28448026 + ... + 28471694.

It is an arithmetic number, because the mean of its divisors is an integer number (6012558720).

Almost surely, 2^673616426340 is an apocalyptic number.

673616426340 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 673616426340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1154411274240).

673616426340 is an abundant number, since it is smaller than the sum of its proper divisors (1635206122140).

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

673616426340 is a wasteful number, since it uses less digits than its factorization.

673616426340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23843 (or 23841 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 48.

The spelling of 673616426340 in words is "six hundred seventy-three billion, six hundred sixteen million, four hundred twenty-six thousand, three hundred forty".