6901878783 has 4 divisors (see below), whose sum is σ = 9202505048. Its totient is φ = 4601252520.

The previous prime is 6901878779. The next prime is 6901878811. The reversal of 6901878783 is 3878781096.

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

It is not a de Polignac number, because 6901878783 - 2² = 6901878779 is a prime.

It is a super-2 number, since 2×6901878783² = 95271861470451122178, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6901878083) 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, 1150313128 + ... + 1150313133.

It is an arithmetic number, because the mean of its divisors is an integer number (2300626262).

Almost surely, 2^6901878783 is an apocalyptic number.

6901878783 is a deficient number, since it is larger than the sum of its proper divisors (2300626265).

6901878783 is a wasteful number, since it uses less digits than its factorization.

6901878783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2300626264.

The product of its (nonzero) digits is 4064256, while the sum is 57.

The square root of 6901878783 is about 83077.5468041757. The cubic root of 6901878783 is about 1903.9510378882.

The spelling of 6901878783 in words is "six billion, nine hundred one million, eight hundred seventy-eight thousand, seven hundred eighty-three".