68497479172320 has 96 divisors (see below), whose sum is σ = 235382246628480. Its totient is φ = 16605449495040.

The previous prime is 68497479172289. The next prime is 68497479172327. The reversal of 68497479172320 is 2327197479486.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68497479172327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6486498430 + ... + 6486508989.

It is an arithmetic number, because the mean of its divisors is an integer number (2451898402380).

Almost surely, 2^{68497479172320} is an apocalyptic number.

68497479172320 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68497479172320 is an abundant number, since it is smaller than the sum of its proper divisors (166884767456160).

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

68497479172320 is a wasteful number, since it uses less digits than its factorization.

68497479172320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12973007448 (or 12973007440 counting only the distinct ones).

The product of its (nonzero) digits is 256048128, while the sum is 69.

The spelling of 68497479172320 in words is "sixty-eight trillion, four hundred ninety-seven billion, four hundred seventy-nine million, one hundred seventy-two thousand, three hundred twenty".