6442916278 has 8 divisors (see below), whose sum is σ = 9691295760. Its totient is φ = 3212484360.

The previous prime is 6442916273. The next prime is 6442916281. The reversal of 6442916278 is 8726192446.

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

It is a super-2 number, since 2×6442916278² = 83022340330634746568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6442916273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4485993 + ... + 4487428.

It is an arithmetic number, because the mean of its divisors is an integer number (1211411970).

Almost surely, 2^6442916278 is an apocalyptic number.

6442916278 is a deficient number, since it is larger than the sum of its proper divisors (3248379482).

6442916278 is a wasteful number, since it uses less digits than its factorization.

6442916278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8973782.

The product of its digits is 1161216, while the sum is 49.

The square root of 6442916278 is about 80267.7785789541. The cubic root of 6442916278 is about 1860.7762857859.

The spelling of 6442916278 in words is "six billion, four hundred forty-two million, nine hundred sixteen thousand, two hundred seventy-eight".