63509730245 has 32 divisors (see below), whose sum is σ = 87015593952. Its totient is φ = 44083003392.

The previous prime is 63509730209. The next prime is 63509730367. The reversal of 63509730245 is 54203790536.

It can be written as a sum of positive squares in 16 ways, for example, as 23317900804 + 40191829441 = 152702^2 + 200479^2 .

It is a cyclic number.

It is not a de Polignac number, because 63509730245 - 2¹⁶ = 63509664709 is a prime.

It is a super-3 number, since 3×63509730245³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 63509730196 and 63509730205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 816989 + ... + 891341.

It is an arithmetic number, because the mean of its divisors is an integer number (2719237311).

Almost surely, 2^63509730245 is an apocalyptic number.

63509730245 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

63509730245 is a deficient number, since it is larger than the sum of its proper divisors (23505863707).

63509730245 is a wasteful number, since it uses less digits than its factorization.

63509730245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75161.

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

The spelling of 63509730245 in words is "sixty-three billion, five hundred nine million, seven hundred thirty thousand, two hundred forty-five".