16220901913 has 2 divisors, whose sum is σ = 16220901914. Its totient is φ = 16220901912.

The previous prime is 16220901887. The next prime is 16220901923. The reversal of 16220901913 is 31910902261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10642604569 + 5578297344 = 103163^2 + 74688^2 .

It is a cyclic number.

It is not a de Polignac number, because 16220901913 - 2²¹ = 16218804761 is a prime.

It is not a weakly prime, because it can be changed into another prime (16220901923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8110450956 + 8110450957.

It is an arithmetic number, because the mean of its divisors is an integer number (8110450957).

Almost surely, 2^16220901913 is an apocalyptic number.

It is an amenable number.

16220901913 is a deficient number, since it is larger than the sum of its proper divisors (1).

16220901913 is an equidigital number, since it uses as much as digits as its factorization.

16220901913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 34.

The spelling of 16220901913 in words is "sixteen billion, two hundred twenty million, nine hundred one thousand, nine hundred thirteen".