16545170424457 has 2 divisors, whose sum is σ = 16545170424458. Its totient is φ = 16545170424456.

The previous prime is 16545170424449. The next prime is 16545170424469. The reversal of 16545170424457 is 75442407154561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11883043058041 + 4662127366416 = 3447179^2 + 2159196^2 .

It is a cyclic number.

It is not a de Polignac number, because 16545170424457 - 2³ = 16545170424449 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16545170424398 and 16545170424407.

It is not a weakly prime, because it can be changed into another prime (16545170424157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8272585212228 + 8272585212229.

It is an arithmetic number, because the mean of its divisors is an integer number (8272585212229).

Almost surely, 2^{16545170424457} is an apocalyptic number.

It is an amenable number.

16545170424457 is a deficient number, since it is larger than the sum of its proper divisors (1).

16545170424457 is an equidigital number, since it uses as much as digits as its factorization.

16545170424457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18816000, while the sum is 55.

The spelling of 16545170424457 in words is "sixteen trillion, five hundred forty-five billion, one hundred seventy million, four hundred twenty-four thousand, four hundred fifty-seven".