1630405427657 has 8 divisors (see below), whose sum is σ = 1631484248832. Its totient is φ = 1629326966400.

The previous prime is 1630405427653. The next prime is 1630405427699. The reversal of 1630405427657 is 7567245040361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1630405427657 - 2² = 1630405427653 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1630405427653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9293648 + ... + 9467454.

It is an arithmetic number, because the mean of its divisors is an integer number (203935531104).

Almost surely, 2^{1630405427657} is an apocalyptic number.

It is an amenable number.

1630405427657 is a deficient number, since it is larger than the sum of its proper divisors (1078821175).

1630405427657 is a wasteful number, since it uses less digits than its factorization.

1630405427657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179959.

The product of its (nonzero) digits is 4233600, while the sum is 50.

The spelling of 1630405427657 in words is "one trillion, six hundred thirty billion, four hundred five million, four hundred twenty-seven thousand, six hundred fifty-seven".