6537117791880 has 1536 divisors, whose sum is σ = 25128012349440. Its totient is φ = 1461669027840.

The previous prime is 6537117791873. The next prime is 6537117791891. The reversal of 6537117791880 is 881977117356.

6537117791880 is a `hidden beast` number, since 6 + 5 + 371 + 17 + 79 + 188 + 0 = 666.

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, 29314429449 + ... + 29314429671.

It is an arithmetic number, because the mean of its divisors is an integer number (16359383040).

Almost surely, 2^{6537117791880} is an apocalyptic number.

6537117791880 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 6537117791880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12564006174720).

6537117791880 is an abundant number, since it is smaller than the sum of its proper divisors (18590894557560).

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

6537117791880 is a wasteful number, since it uses less digits than its factorization.

6537117791880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491 (or 484 counting only the distinct ones).

The product of its (nonzero) digits is 17781120, while the sum is 63.

The spelling of 6537117791880 in words is "six trillion, five hundred thirty-seven billion, one hundred seventeen million, seven hundred ninety-one thousand, eight hundred eighty".