63513747361 has 8 divisors (see below), whose sum is σ = 63653244840. Its totient is φ = 63374308608.

The previous prime is 63513747359. The next prime is 63513747443. The reversal of 63513747361 is 16374731536.

It can be written as a sum of positive squares in 4 ways, for example, as 8020993600 + 55492753761 = 89560^2 + 235569^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 63513747361 - 2¹ = 63513747359 is a prime.

It is a super-2 number, since 2×63513747361² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63513757361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2684395 + ... + 2707951.

It is an arithmetic number, because the mean of its divisors is an integer number (7956655605).

Almost surely, 2^63513747361 is an apocalyptic number.

It is an amenable number.

63513747361 is a deficient number, since it is larger than the sum of its proper divisors (139497479).

63513747361 is a wasteful number, since it uses less digits than its factorization.

63513747361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29363.

The product of its digits is 952560, while the sum is 46.

The spelling of 63513747361 in words is "sixty-three billion, five hundred thirteen million, seven hundred forty-seven thousand, three hundred sixty-one".