16401294001 has 4 divisors (see below), whose sum is σ = 16801325604. Its totient is φ = 16001262400.

The previous prime is 16401293977. The next prime is 16401294113. The reversal of 16401294001 is 10049210461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10049210461 = 5167 ⋅1944883.

It can be written as a sum of positive squares in 2 ways, for example, as 7934533776 + 8466760225 = 89076^2 + 92015^2 .

It is a cyclic number.

It is not a de Polignac number, because 16401294001 - 2¹¹ = 16401291953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16401294401) by changing a digit.

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, 200015740 + ... + 200015821.

It is an arithmetic number, because the mean of its divisors is an integer number (4200331401).

Almost surely, 2^16401294001 is an apocalyptic number.

It is an amenable number.

16401294001 is a deficient number, since it is larger than the sum of its proper divisors (400031603).

16401294001 is an equidigital number, since it uses as much as digits as its factorization.

16401294001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400031602.

The product of its (nonzero) digits is 1728, while the sum is 28.

The spelling of 16401294001 in words is "sixteen billion, four hundred one million, two hundred ninety-four thousand, one".