63953333345 has 24 divisors (see below), whose sum is σ = 89317046952. Its totient is φ = 43775536640.

The previous prime is 63953333263. The next prime is 63953333357. The reversal of 63953333345 is 54333335936.

It can be written as a sum of positive squares in 4 ways, for example, as 715669504 + 63237663841 = 26752^2 + 251471^2 .

It is not a de Polignac number, because 63953333345 - 2¹⁴ = 63953316961 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 63953333345.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3098774 + ... + 3119343.

It is an arithmetic number, because the mean of its divisors is an integer number (3721543623).

Almost surely, 2^63953333345 is an apocalyptic number.

It is an amenable number.

63953333345 is a deficient number, since it is larger than the sum of its proper divisors (25363713607).

63953333345 is a wasteful number, since it uses less digits than its factorization.

63953333345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6218161 (or 6218150 counting only the distinct ones).

The product of its digits is 3936600, while the sum is 47.

The spelling of 63953333345 in words is "sixty-three billion, nine hundred fifty-three million, three hundred thirty-three thousand, three hundred forty-five".