63612566345 has 8 divisors (see below), whose sum is σ = 77010611976. Its totient is φ = 50439698176.

The previous prime is 63612566321. The next prime is 63612566389. The reversal of 63612566345 is 54366521636.

It can be written as a sum of positive squares in 4 ways, for example, as 5150645824 + 58461920521 = 71768^2 + 241789^2 .

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 63612566345 - 2¹⁰ = 63612565321 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 63612566345.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56293742 + ... + 56294871.

It is an arithmetic number, because the mean of its divisors is an integer number (9626326497).

Almost surely, 2^63612566345 is an apocalyptic number.

It is an amenable number.

63612566345 is a deficient number, since it is larger than the sum of its proper divisors (13398045631).

63612566345 is a wasteful number, since it uses less digits than its factorization.

63612566345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112588731.

The product of its digits is 2332800, while the sum is 47.

The spelling of 63612566345 in words is "sixty-three billion, six hundred twelve million, five hundred sixty-six thousand, three hundred forty-five".