6537780877356 has 36 divisors (see below), whose sum is σ = 16526160609504. Its totient is φ = 2179246658400.

The previous prime is 6537780877343. The next prime is 6537780877357.

It is a happy number.

6537780877356 is a `hidden beast` number, since 6 + 53 + 77 + 80 + 87 + 7 + 356 = 666.

6537780877356 is nontrivially palindromic in base 10.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×6537780877356² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6537780877357) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6455646 + ... + 7399386.

Almost surely, 2^{6537780877356} is an apocalyptic number.

It is an amenable number.

6537780877356 is an abundant number, since it is smaller than the sum of its proper divisors (9988379732148).

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

6537780877356 is a wasteful number, since it uses less digits than its factorization.

6537780877356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1136182 (or 1136177 counting only the distinct ones).

The product of its (nonzero) digits is 1244678400, while the sum is 72.

The spelling of 6537780877356 in words is "six trillion, five hundred thirty-seven billion, seven hundred eighty million, eight hundred seventy-seven thousand, three hundred fifty-six".