6781955536 has 20 divisors (see below), whose sum is σ = 13711345632. Its totient is φ = 3243543776.

The previous prime is 6781955527. The next prime is 6781955567. The reversal of 6781955536 is 6355591876.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9214246 + ... + 9214981.

Almost surely, 2^6781955536 is an apocalyptic number.

It is an amenable number.

6781955536 is an abundant number, since it is smaller than the sum of its proper divisors (6929390096).

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

6781955536 is a wasteful number, since it uses less digits than its factorization.

6781955536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18429258 (or 18429252 counting only the distinct ones).

The product of its digits is 6804000, while the sum is 55.

The square root of 6781955536 is about 82352.6291990729. The cubic root of 6781955536 is about 1892.8592107246.

The spelling of 6781955536 in words is "six billion, seven hundred eighty-one million, nine hundred fifty-five thousand, five hundred thirty-six".