16105723457 has 2 divisors, whose sum is σ = 16105723458. Its totient is φ = 16105723456.

The previous prime is 16105723429. The next prime is 16105723519. The reversal of 16105723457 is 75432750161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15332382976 + 773340481 = 123824^2 + 27809^2 .

It is a cyclic number.

It is not a de Polignac number, because 16105723457 - 2⁶ = 16105723393 is a prime.

It is not a weakly prime, because it can be changed into another prime (16105723427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8052861728 + 8052861729.

It is an arithmetic number, because the mean of its divisors is an integer number (8052861729).

Almost surely, 2^16105723457 is an apocalyptic number.

It is an amenable number.

16105723457 is a deficient number, since it is larger than the sum of its proper divisors (1).

16105723457 is an equidigital number, since it uses as much as digits as its factorization.

16105723457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 176400, while the sum is 41.

The spelling of 16105723457 in words is "sixteen billion, one hundred five million, seven hundred twenty-three thousand, four hundred fifty-seven".