63719457065 has 16 divisors (see below), whose sum is σ = 87804803520. Its totient is φ = 43902400320.

The previous prime is 63719457047. The next prime is 63719457079. The reversal of 63719457065 is 56075491736.

It is not a de Polignac number, because 63719457065 - 2¹⁰ = 63719456041 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 63719456998 and 63719457016.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30486734 + ... + 30488823.

It is an arithmetic number, because the mean of its divisors is an integer number (5487800220).

Almost surely, 2^63719457065 is an apocalyptic number.

It is an amenable number.

63719457065 is a deficient number, since it is larger than the sum of its proper divisors (24085346455).

63719457065 is a wasteful number, since it uses less digits than its factorization.

63719457065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60975592.

The product of its (nonzero) digits is 4762800, while the sum is 53.

The spelling of 63719457065 in words is "sixty-three billion, seven hundred nineteen million, four hundred fifty-seven thousand, sixty-five".