16451367402021 has 8 divisors (see below), whose sum is σ = 21935175908640. Its totient is φ = 10967568581712.

The previous prime is 16451367402013. The next prime is 16451367402031. The reversal of 16451367402021 is 12020476315461.

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

It is not a de Polignac number, because 16451367402021 - 2³ = 16451367402013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16451367402011) 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, 3895711 + ... + 6933923.

It is an arithmetic number, because the mean of its divisors is an integer number (2741896988580).

Almost surely, 2^{16451367402021} is an apocalyptic number.

It is an amenable number.

16451367402021 is a deficient number, since it is larger than the sum of its proper divisors (5483808506619).

16451367402021 is a wasteful number, since it uses less digits than its factorization.

16451367402021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4843155.

The product of its (nonzero) digits is 241920, while the sum is 42.

The spelling of 16451367402021 in words is "sixteen trillion, four hundred fifty-one billion, three hundred sixty-seven million, four hundred two thousand, twenty-one".