16051431012421 has 8 divisors (see below), whose sum is σ = 18348996544704. Its totient is φ = 13754991469920.

The previous prime is 16051431012377. The next prime is 16051431012497. The reversal of 16051431012421 is 12421013415061.

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 16051431012421 - 2¹⁵ = 16051430979653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16051431012521) 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, 281466895 + ... + 281523916.

It is an arithmetic number, because the mean of its divisors is an integer number (2293624568088).

Almost surely, 2^{16051431012421} is an apocalyptic number.

It is an amenable number.

16051431012421 is a deficient number, since it is larger than the sum of its proper divisors (2297565532283).

16051431012421 is an equidigital number, since it uses as much as digits as its factorization.

16051431012421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562994891.

The product of its (nonzero) digits is 5760, while the sum is 31.

Adding to 16051431012421 its reverse (12421013415061), we get a palindrome (28472444427482).

The spelling of 16051431012421 in words is "sixteen trillion, fifty-one billion, four hundred thirty-one million, twelve thousand, four hundred twenty-one".