63875787953 has 4 divisors (see below), whose sum is σ = 64162226688. Its totient is φ = 63589349220.

The previous prime is 63875787949. The next prime is 63875788019. The reversal of 63875787953 is 35978757836.

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 63875787953 - 2² = 63875787949 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63875787653) 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, 143219033 + ... + 143219478.

It is an arithmetic number, because the mean of its divisors is an integer number (16040556672).

Almost surely, 2^63875787953 is an apocalyptic number.

It is an amenable number.

63875787953 is a deficient number, since it is larger than the sum of its proper divisors (286438735).

63875787953 is a wasteful number, since it uses less digits than its factorization.

63875787953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286438734.

The product of its digits is 266716800, while the sum is 68.

The spelling of 63875787953 in words is "sixty-three billion, eight hundred seventy-five million, seven hundred eighty-seven thousand, nine hundred fifty-three".