63642642349 has 16 divisors (see below), whose sum is σ = 74779415424. Its totient is φ = 53398958400.

The previous prime is 63642642337. The next prime is 63642642367. The reversal of 63642642349 is 94324624636.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 63642642349 - 2¹⁵ = 63642609581 is a prime.

It is a super-3 number, since 3×63642642349³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63642642149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1154679 + ... + 1208539.

It is an arithmetic number, because the mean of its divisors is an integer number (4673713464).

Almost surely, 2^63642642349 is an apocalyptic number.

It is an amenable number.

63642642349 is a deficient number, since it is larger than the sum of its proper divisors (11136773075).

63642642349 is a wasteful number, since it uses less digits than its factorization.

63642642349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62148.

The product of its digits is 4478976, while the sum is 49.

The spelling of 63642642349 in words is "sixty-three billion, six hundred forty-two million, six hundred forty-two thousand, three hundred forty-nine".