16504701457 has 2 divisors, whose sum is σ = 16504701458. Its totient is φ = 16504701456.

The previous prime is 16504701383. The next prime is 16504701461. The reversal of 16504701457 is 75410740561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11656225296 + 4848476161 = 107964^2 + 69631^2 .

It is a cyclic number.

It is not a de Polignac number, because 16504701457 - 2¹⁹ = 16504177169 is a prime.

It is not a weakly prime, because it can be changed into another prime (16504701487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8252350728 + 8252350729.

It is an arithmetic number, because the mean of its divisors is an integer number (8252350729).

Almost surely, 2^16504701457 is an apocalyptic number.

It is an amenable number.

16504701457 is a deficient number, since it is larger than the sum of its proper divisors (1).

16504701457 is an equidigital number, since it uses as much as digits as its factorization.

16504701457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 117600, while the sum is 40.

The spelling of 16504701457 in words is "sixteen billion, five hundred four million, seven hundred one thousand, four hundred fifty-seven".