16220694412547 has 2 divisors, whose sum is σ = 16220694412548. Its totient is φ = 16220694412546.

The previous prime is 16220694412423. The next prime is 16220694412633. The reversal of 16220694412547 is 74521449602261.

16220694412547 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16220694412547 is a prime.

It is a super-2 number, since 2×16220694412547² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16220694411547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8110347206273 + 8110347206274.

It is an arithmetic number, because the mean of its divisors is an integer number (8110347206274).

Almost surely, 2^{16220694412547} is an apocalyptic number.

16220694412547 is a deficient number, since it is larger than the sum of its proper divisors (1).

16220694412547 is an equidigital number, since it uses as much as digits as its factorization.

16220694412547 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5806080, while the sum is 53.

The spelling of 16220694412547 in words is "sixteen trillion, two hundred twenty billion, six hundred ninety-four million, four hundred twelve thousand, five hundred forty-seven".