999950221451 has 8 divisors (see below), whose sum is σ = 1034520110400. Its totient is φ = 965386255680.

The previous prime is 999950221433. The next prime is 999950221463. The reversal of 999950221451 is 154122059999.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-999950221451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (999950221411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1135955 + ... + 1813916.

It is an arithmetic number, because the mean of its divisors is an integer number (129315013800).

Almost surely, 2^999950221451 is an apocalyptic number.

999950221451 is a deficient number, since it is larger than the sum of its proper divisors (34569888949).

999950221451 is a wasteful number, since it uses less digits than its factorization.

999950221451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2961589.

The product of its (nonzero) digits is 2624400, while the sum is 56.

The spelling of 999950221451 in words is "nine hundred ninety-nine billion, nine hundred fifty million, two hundred twenty-one thousand, four hundred fifty-one".