998621359954 has 8 divisors (see below), whose sum is σ = 1563059520000. Its totient is φ = 477601519956.

The previous prime is 998621359937. The next prime is 998621359979. The reversal of 998621359954 is 459953126899.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10854579954 + ... + 10854580045.

It is an arithmetic number, because the mean of its divisors is an integer number (195382440000).

Almost surely, 2^998621359954 is an apocalyptic number.

998621359954 is a deficient number, since it is larger than the sum of its proper divisors (564438160046).

998621359954 is a wasteful number, since it uses less digits than its factorization.

998621359954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21709160024.

The product of its digits is 188956800, while the sum is 70.

The spelling of 998621359954 in words is "nine hundred ninety-eight billion, six hundred twenty-one million, three hundred fifty-nine thousand, nine hundred fifty-four".