16942620394501 has 2 divisors, whose sum is σ = 16942620394502. Its totient is φ = 16942620394500.

The previous prime is 16942620394499. The next prime is 16942620394561. The reversal of 16942620394501 is 10549302624961.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15049946089476 + 1892674305025 = 3879426^2 + 1375745^2 .

It is a cyclic number.

It is not a de Polignac number, because 16942620394501 - 2¹ = 16942620394499 is a prime.

It is a super-2 number, since 2×16942620394501² (a number of 27 digits) contains 22 as substring.

Together with 16942620394499, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16942620394561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8471310197250 + 8471310197251.

It is an arithmetic number, because the mean of its divisors is an integer number (8471310197251).

Almost surely, 2^{16942620394501} is an apocalyptic number.

It is an amenable number.

16942620394501 is a deficient number, since it is larger than the sum of its proper divisors (1).

16942620394501 is an equidigital number, since it uses as much as digits as its factorization.

16942620394501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2799360, while the sum is 52.

The spelling of 16942620394501 in words is "sixteen trillion, nine hundred forty-two billion, six hundred twenty million, three hundred ninety-four thousand, five hundred one".