63347811387 has 16 divisors (see below), whose sum is σ = 100726955520. Its totient is φ = 34624890432.

The previous prime is 63347811383. The next prime is 63347811391. The reversal of 63347811387 is 78311874336.

It is an interprime number because it is at equal distance from previous prime (63347811383) and next prime (63347811391).

It is not a de Polignac number, because 63347811387 - 2² = 63347811383 is a prime.

It is a super-3 number, since 3×63347811387³ (a number of 33 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (63347811383) 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 15 ways as a sum of consecutive naturals, for example, 65576962 + ... + 65577927.

It is an arithmetic number, because the mean of its divisors is an integer number (6295434720).

Almost surely, 2^63347811387 is an apocalyptic number.

63347811387 is a deficient number, since it is larger than the sum of its proper divisors (37379144133).

63347811387 is a wasteful number, since it uses less digits than its factorization.

63347811387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131154922.

The product of its digits is 2032128, while the sum is 51.

The spelling of 63347811387 in words is "sixty-three billion, three hundred forty-seven million, eight hundred eleven thousand, three hundred eighty-seven".