16420453652157 has 4 divisors (see below), whose sum is σ = 21893938202880. Its totient is φ = 10946969101436.

The previous prime is 16420453652153. The next prime is 16420453652209. The reversal of 16420453652157 is 75125635402461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16420453652157 - 2² = 16420453652153 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16420453652153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2736742275357 + ... + 2736742275362.

It is an arithmetic number, because the mean of its divisors is an integer number (5473484550720).

Almost surely, 2^{16420453652157} is an apocalyptic number.

It is an amenable number.

16420453652157 is a deficient number, since it is larger than the sum of its proper divisors (5473484550723).

16420453652157 is an equidigital number, since it uses as much as digits as its factorization.

16420453652157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5473484550722.

The product of its (nonzero) digits is 6048000, while the sum is 51.

The spelling of 16420453652157 in words is "sixteen trillion, four hundred twenty billion, four hundred fifty-three million, six hundred fifty-two thousand, one hundred fifty-seven".