671489049600 has 264 divisors, whose sum is σ = 2465898407520. Its totient is φ = 179063562240.

The previous prime is 671489049599. The next prime is 671489049617. The reversal of 671489049600 is 6940984176.

671489049600 is a `hidden beast` number, since 6 + 7 + 148 + 9 + 0 + 496 + 0 + 0 = 666.

It is a super-2 number, since 2×671489049600² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 205459 + ... + 1176941.

Almost surely, 2^671489049600 is an apocalyptic number.

671489049600 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 671489049600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1232949203760).

671489049600 is an abundant number, since it is smaller than the sum of its proper divisors (1794409357920).

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

671489049600 is a wasteful number, since it uses less digits than its factorization.

671489049600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 971522 (or 971493 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The spelling of 671489049600 in words is "six hundred seventy-one billion, four hundred eighty-nine million, forty-nine thousand, six hundred".