16541033657 has 2 divisors, whose sum is σ = 16541033658. Its totient is φ = 16541033656.

The previous prime is 16541033653. The next prime is 16541033681. The reversal of 16541033657 is 75633014561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13353189136 + 3187844521 = 115556^2 + 56461^2 .

It is a cyclic number.

It is not a de Polignac number, because 16541033657 - 2² = 16541033653 is a prime.

It is not a weakly prime, because it can be changed into another prime (16541033653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8270516828 + 8270516829.

It is an arithmetic number, because the mean of its divisors is an integer number (8270516829).

Almost surely, 2^16541033657 is an apocalyptic number.

It is an amenable number.

16541033657 is a deficient number, since it is larger than the sum of its proper divisors (1).

16541033657 is an equidigital number, since it uses as much as digits as its factorization.

16541033657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 226800, while the sum is 41.

The spelling of 16541033657 in words is "sixteen billion, five hundred forty-one million, thirty-three thousand, six hundred fifty-seven".