6880778453 has 4 divisors (see below), whose sum is σ = 6885297888. Its totient is φ = 6876259020.

The previous prime is 6880778423. The next prime is 6880778461. The reversal of 6880778453 is 3548770886.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6880778453 - 2²⁶ = 6813669589 is a prime.

It is a super-2 number, since 2×6880778453² = 94690224238538146418, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6880778423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2257433 + ... + 2260478.

It is an arithmetic number, because the mean of its divisors is an integer number (1721324472).

Almost surely, 2^6880778453 is an apocalyptic number.

It is an amenable number.

6880778453 is a deficient number, since it is larger than the sum of its proper divisors (4519435).

6880778453 is a wasteful number, since it uses less digits than its factorization.

6880778453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4519434.

The product of its (nonzero) digits is 9031680, while the sum is 56.

The square root of 6880778453 is about 82950.4578227269. The cubic root of 6880778453 is about 1902.0088128825.

The spelling of 6880778453 in words is "six billion, eight hundred eighty million, seven hundred seventy-eight thousand, four hundred fifty-three".