4494198977078 has 4 divisors (see below), whose sum is σ = 6741298465620. Its totient is φ = 2247099488538.

The previous prime is 4494198977071. The next prime is 4494198977123. The reversal of 4494198977078 is 8707798914944.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4494198977071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1123549744268 + ... + 1123549744271.

It is an arithmetic number, because the mean of its divisors is an integer number (1685324616405).

Almost surely, 2^{4494198977078} is an apocalyptic number.

4494198977078 is a deficient number, since it is larger than the sum of its proper divisors (2247099488542).

4494198977078 is a wasteful number, since it uses less digits than its factorization.

4494198977078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2247099488541.

The product of its (nonzero) digits is 1024192512, while the sum is 77.

The spelling of 4494198977078 in words is "four trillion, four hundred ninety-four billion, one hundred ninety-eight million, nine hundred seventy-seven thousand, seventy-eight".