6978641451 has 8 divisors (see below), whose sum is σ = 9502831104. Its totient is φ = 4553439720.

The previous prime is 6978641443. The next prime is 6978641473. The reversal of 6978641451 is 1541468796.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6978641451 - 2³ = 6978641443 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6978641394 and 6978641403.

It is not an unprimeable number, because it can be changed into a prime (6978648451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24746815 + ... + 24747096.

It is an arithmetic number, because the mean of its divisors is an integer number (1187853888).

Almost surely, 2^6978641451 is an apocalyptic number.

6978641451 is a deficient number, since it is larger than the sum of its proper divisors (2524189653).

6978641451 is a wasteful number, since it uses less digits than its factorization.

6978641451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49493961.

The product of its digits is 1451520, while the sum is 51.

The square root of 6978641451 is about 83538.2633946864. The cubic root of 6978641451 is about 1910.9836084862.

The spelling of 6978641451 in words is "six billion, nine hundred seventy-eight million, six hundred forty-one thousand, four hundred fifty-one".