16205400527819 has 2 divisors, whose sum is σ = 16205400527820. Its totient is φ = 16205400527818.

The previous prime is 16205400527677. The next prime is 16205400527867. The reversal of 16205400527819 is 91872500450261.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16205400527819 - 2³⁶ = 16136681051083 is a prime.

It is a super-2 number, since 2×16205400527819² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16205400527879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8102700263909 + 8102700263910.

It is an arithmetic number, because the mean of its divisors is an integer number (8102700263910).

Almost surely, 2^{16205400527819} is an apocalyptic number.

16205400527819 is a deficient number, since it is larger than the sum of its proper divisors (1).

16205400527819 is an equidigital number, since it uses as much as digits as its factorization.

16205400527819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1209600, while the sum is 50.

The spelling of 16205400527819 in words is "sixteen trillion, two hundred five billion, four hundred million, five hundred twenty-seven thousand, eight hundred nineteen".