61362633053563 has 4 divisors (see below), whose sum is σ = 64592245319560. Its totient is φ = 58133020787568.

The previous prime is 61362633053549. The next prime is 61362633053567. The reversal of 61362633053563 is 36535033626316.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61362633053563 - 2²¹ = 61362630956411 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 61362633053563.

It is not an unprimeable number, because it can be changed into a prime (61362633053567) 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, 1614806132970 + ... + 1614806133007.

It is an arithmetic number, because the mean of its divisors is an integer number (16148061329890).

Almost surely, 2^{61362633053563} is an apocalyptic number.

61362633053563 is a deficient number, since it is larger than the sum of its proper divisors (3229612265997).

61362633053563 is a wasteful number, since it uses less digits than its factorization.

61362633053563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3229612265996.

The product of its (nonzero) digits is 15746400, while the sum is 52.

Adding to 61362633053563 its reverse (36535033626316), we get a palindrome (97897666679879).

The spelling of 61362633053563 in words is "sixty-one trillion, three hundred sixty-two billion, six hundred thirty-three million, fifty-three thousand, five hundred sixty-three".