634216355457 has 16 divisors (see below), whose sum is σ = 847850536320. Its totient is φ = 421697549952.

The previous prime is 634216355453. The next prime is 634216355527. The reversal of 634216355457 is 754553612436.

It is not a de Polignac number, because 634216355457 - 2² = 634216355453 is a prime.

It is not an unprimeable number, because it can be changed into a prime (634216355453) 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 in 15 ways as a sum of consecutive naturals, for example, 2406669 + ... + 2657157.

It is an arithmetic number, because the mean of its divisors is an integer number (52990658520).

Almost surely, 2^634216355457 is an apocalyptic number.

It is an amenable number.

634216355457 is a deficient number, since it is larger than the sum of its proper divisors (213634180863).

634216355457 is a wasteful number, since it uses less digits than its factorization.

634216355457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252712.

The product of its digits is 9072000, while the sum is 51.

The spelling of 634216355457 in words is "six hundred thirty-four billion, two hundred sixteen million, three hundred fifty-five thousand, four hundred fifty-seven".