6783877803455 has 4 divisors (see below), whose sum is σ = 8140653364152. Its totient is φ = 5427102242760.

The previous prime is 6783877803349. The next prime is 6783877803467. The reversal of 6783877803455 is 5543087783876.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 6783877803455 - 2¹² = 6783877799359 is a prime.

It is a Duffinian number.

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, 678387780341 + ... + 678387780350.

It is an arithmetic number, because the mean of its divisors is an integer number (2035163341038).

Almost surely, 2^{6783877803455} is an apocalyptic number.

6783877803455 is a deficient number, since it is larger than the sum of its proper divisors (1356775560697).

6783877803455 is a wasteful number, since it uses less digits than its factorization.

6783877803455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1356775560696.

The product of its (nonzero) digits is 948326400, while the sum is 71.

The spelling of 6783877803455 in words is "six trillion, seven hundred eighty-three billion, eight hundred seventy-seven million, eight hundred three thousand, four hundred fifty-five".