63361052661 has 4 divisors (see below), whose sum is σ = 84481403552. Its totient is φ = 42240701772.

The previous prime is 63361052659. The next prime is 63361052669. The reversal of 63361052661 is 16625016336.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 63361052661 - 2¹ = 63361052659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63361052669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10560175441 + ... + 10560175446.

It is an arithmetic number, because the mean of its divisors is an integer number (21120350888).

Almost surely, 2^63361052661 is an apocalyptic number.

It is an amenable number.

63361052661 is a deficient number, since it is larger than the sum of its proper divisors (21120350891).

63361052661 is a wasteful number, since it uses less digits than its factorization.

63361052661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21120350890.

The product of its (nonzero) digits is 116640, while the sum is 39.

Adding to 63361052661 its reverse (16625016336), we get a palindrome (79986068997).

The spelling of 63361052661 in words is "sixty-three billion, three hundred sixty-one million, fifty-two thousand, six hundred sixty-one".