6538711491774 has 192 divisors, whose sum is σ = 18238642126848. Its totient is φ = 1643052859200.

The previous prime is 6538711491749. The next prime is 6538711491787. The reversal of 6538711491774 is 4771941178356.

It is a happy number.

6538711491774 is a `hidden beast` number, since 6 + 5 + 3 + 8 + 71 + 1 + 491 + 7 + 74 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 143612577 + ... + 143658099.

It is an arithmetic number, because the mean of its divisors is an integer number (94992927744).

Almost surely, 2^{6538711491774} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6538711491774, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9119321063424).

6538711491774 is an abundant number, since it is smaller than the sum of its proper divisors (11699930635074).

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

6538711491774 is a wasteful number, since it uses less digits than its factorization.

6538711491774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48923 (or 48920 counting only the distinct ones).

The product of its digits is 35562240, while the sum is 63.

The spelling of 6538711491774 in words is "six trillion, five hundred thirty-eight billion, seven hundred eleven million, four hundred ninety-one thousand, seven hundred seventy-four".