63731213735 has 12 divisors (see below), whose sum is σ = 88963572168. Its totient is φ = 43701403536.

The previous prime is 63731213729. The next prime is 63731213761. The reversal of 63731213735 is 53731213736.

It is not a de Polignac number, because 63731213735 - 2⁴ = 63731213719 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 63731213692 and 63731213701.

It is a congruent number.

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, 130063457 + ... + 130063946.

It is an arithmetic number, because the mean of its divisors is an integer number (7413631014).

Almost surely, 2^63731213735 is an apocalyptic number.

63731213735 is a deficient number, since it is larger than the sum of its proper divisors (25232358433).

63731213735 is a wasteful number, since it uses less digits than its factorization.

63731213735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260127422 (or 260127415 counting only the distinct ones).

The product of its digits is 238140, while the sum is 41.

Subtracting from 63731213735 its reverse (53731213736), we obtain a palindrome (9999999999).

The spelling of 63731213735 in words is "sixty-three billion, seven hundred thirty-one million, two hundred thirteen thousand, seven hundred thirty-five".