163616336425 has 12 divisors (see below), whose sum is σ = 202992635740. Its totient is φ = 130823147520.

The previous prime is 163616336417. The next prime is 163616336431. The reversal of 163616336425 is 524633616361.

It can be written as a sum of positive squares in 6 ways, for example, as 46255965184 + 117360371241 = 215072^2 + 342579^2 .

It is not a de Polignac number, because 163616336425 - 2³ = 163616336417 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1700280 + ... + 1793929.

Almost surely, 2^163616336425 is an apocalyptic number.

It is an amenable number.

163616336425 is a deficient number, since it is larger than the sum of its proper divisors (39376299315).

163616336425 is a wasteful number, since it uses less digits than its factorization.

163616336425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3496092 (or 3496087 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 46.

The spelling of 163616336425 in words is "one hundred sixty-three billion, six hundred sixteen million, three hundred thirty-six thousand, four hundred twenty-five".