63112513949 has 4 divisors (see below), whose sum is σ = 63113524380. Its totient is φ = 63111503520.

The previous prime is 63112513831. The next prime is 63112513963. The reversal of 63112513949 is 94931521136.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25041480025 + 38071033924 = 158245^2 + 195118^2 .

It is a cyclic number.

It is not a de Polignac number, because 63112513949 - 2²⁴ = 63095736733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63112573949) 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 3 ways as a sum of consecutive naturals, for example, 404882 + ... + 538659.

It is an arithmetic number, because the mean of its divisors is an integer number (15778381095).

Almost surely, 2^63112513949 is an apocalyptic number.

It is an amenable number.

63112513949 is a deficient number, since it is larger than the sum of its proper divisors (1010431).

63112513949 is an equidigital number, since it uses as much as digits as its factorization.

63112513949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010430.

The product of its digits is 174960, while the sum is 44.

The spelling of 63112513949 in words is "sixty-three billion, one hundred twelve million, five hundred thirteen thousand, nine hundred forty-nine".