63193977349 has 4 divisors (see below), whose sum is σ = 64084033440. Its totient is φ = 62303921260.

The previous prime is 63193977347. The next prime is 63193977377. The reversal of 63193977349 is 94377939136.

63193977349 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 63193977349 - 2¹ = 63193977347 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 (63193977347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 445027939 + ... + 445028080.

It is an arithmetic number, because the mean of its divisors is an integer number (16021008360).

Almost surely, 2^63193977349 is an apocalyptic number.

It is an amenable number.

63193977349 is a deficient number, since it is larger than the sum of its proper divisors (890056091).

63193977349 is an equidigital number, since it uses as much as digits as its factorization.

63193977349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 890056090.

The product of its digits is 23147208, while the sum is 61.

The spelling of 63193977349 in words is "sixty-three billion, one hundred ninety-three million, nine hundred seventy-seven thousand, three hundred forty-nine".