7977338001998 has 8 divisors (see below), whose sum is σ = 12595796845320. Its totient is φ = 3778739053560.

The previous prime is 7977338001973. The next prime is 7977338002019. The reversal of 7977338001998 is 8991008337797.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104964973673 + ... + 104964973748.

It is an arithmetic number, because the mean of its divisors is an integer number (1574474605665).

Almost surely, 2^{7977338001998} is an apocalyptic number.

7977338001998 is a deficient number, since it is larger than the sum of its proper divisors (4618458843322).

7977338001998 is a wasteful number, since it uses less digits than its factorization.

7977338001998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209929947442.

The product of its (nonzero) digits is 144027072, while the sum is 71.

The spelling of 7977338001998 in words is "seven trillion, nine hundred seventy-seven billion, three hundred thirty-eight million, one thousand, nine hundred ninety-eight".