63439270505 has 16 divisors (see below), whose sum is σ = 82628603904. Its totient is φ = 46478577600.

The previous prime is 63439270471. The next prime is 63439270541. The reversal of 63439270505 is 50507293436.

63439270505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 63439270505 - 2²⁰ = 63438221929 is a prime.

It is a Duffinian number.

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, 3834221 + ... + 3850730.

It is an arithmetic number, because the mean of its divisors is an integer number (5164287744).

Almost surely, 2^63439270505 is an apocalyptic number.

63439270505 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

63439270505 is a deficient number, since it is larger than the sum of its proper divisors (19189333399).

63439270505 is a wasteful number, since it uses less digits than its factorization.

63439270505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7685096.

The product of its (nonzero) digits is 680400, while the sum is 44.

The spelling of 63439270505 in words is "sixty-three billion, four hundred thirty-nine million, two hundred seventy thousand, five hundred five".