671200992000 has 3456 divisors, whose sum is σ = 3342715084800. Its totient is φ = 129890304000.

The previous prime is 671200991977. The next prime is 671200992047. The reversal of 671200992000 is 299002176.

It is a tau number, because it is divible by the number of its divisors (3456).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 11376287971 + ... + 11376288029.

It is an arithmetic number, because the mean of its divisors is an integer number (967220800).

Almost surely, 2^671200992000 is an apocalyptic number.

671200992000 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 671200992000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1671357542400).

671200992000 is an abundant number, since it is smaller than the sum of its proper divisors (2671514092800).

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

671200992000 is a wasteful number, since it uses less digits than its factorization.

671200992000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142 (or 106 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

Adding to 671200992000 its reverse (299002176), we get a palindrome (671499994176).

The spelling of 671200992000 in words is "six hundred seventy-one billion, two hundred million, nine hundred ninety-two thousand".