993119951621 has 8 divisors (see below), whose sum is σ = 1135065335424. Its totient is φ = 851192344080.

The previous prime is 993119951599. The next prime is 993119951657. The reversal of 993119951621 is 126159911399.

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

It is a cyclic number.

It is not a de Polignac number, because 993119951621 - 2³⁴ = 975940082437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (993119951671) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 4324130 + ... + 4548003.

It is an arithmetic number, because the mean of its divisors is an integer number (141883166928).

Almost surely, 2^993119951621 is an apocalyptic number.

It is an amenable number.

993119951621 is a deficient number, since it is larger than the sum of its proper divisors (141945383803).

993119951621 is a wasteful number, since it uses less digits than its factorization.

993119951621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8888131.

The product of its digits is 1180980, while the sum is 56.

The spelling of 993119951621 in words is "nine hundred ninety-three billion, one hundred nineteen million, nine hundred fifty-one thousand, six hundred twenty-one".