384520046657 has 2 divisors, whose sum is σ = 384520046658. Its totient is φ = 384520046656.

The previous prime is 384520046639. The next prime is 384520046671. The reversal of 384520046657 is 756640025483.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 208811527681 + 175708518976 = 456959^2 + 419176^2 .

It is a cyclic number.

It is not a de Polignac number, because 384520046657 - 2⁶ = 384520046593 is a prime.

It is a super-2 number, since 2×384520046657² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (384520042657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192260023328 + 192260023329.

It is an arithmetic number, because the mean of its divisors is an integer number (192260023329).

Almost surely, 2^384520046657 is an apocalyptic number.

It is an amenable number.

384520046657 is a deficient number, since it is larger than the sum of its proper divisors (1).

384520046657 is an equidigital number, since it uses as much as digits as its factorization.

384520046657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4838400, while the sum is 50.

The spelling of 384520046657 in words is "three hundred eighty-four billion, five hundred twenty million, forty-six thousand, six hundred fifty-seven".