63215505313 has 16 divisors (see below), whose sum is σ = 67614414336. Its totient is φ = 58955944960.

The previous prime is 63215505307. The next prime is 63215505317. The reversal of 63215505313 is 31350551236.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63215505313 is a prime.

It is a super-2 number, since 2×63215505313² (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 (63215505317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1580520 + ... + 1620022.

It is an arithmetic number, because the mean of its divisors is an integer number (4225900896).

Almost surely, 2^63215505313 is an apocalyptic number.

It is an amenable number.

63215505313 is a deficient number, since it is larger than the sum of its proper divisors (4398909023).

63215505313 is a wasteful number, since it uses less digits than its factorization.

63215505313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41264.

The product of its (nonzero) digits is 40500, while the sum is 34.

The spelling of 63215505313 in words is "sixty-three billion, two hundred fifteen million, five hundred five thousand, three hundred thirteen".