61513603265323 has 16 divisors (see below), whose sum is σ = 69420955080960. Its totient is φ = 53992186612000.

The previous prime is 61513603265287. The next prime is 61513603265339. The reversal of 61513603265323 is 32356230631516.

It is a cyclic number.

It is not a de Polignac number, because 61513603265323 - 2²¹ = 61513601168171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61513603265363) 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, 16892136 + ... + 20208202.

It is an arithmetic number, because the mean of its divisors is an integer number (4338809692560).

Almost surely, 2^{61513603265323} is an apocalyptic number.

61513603265323 is a deficient number, since it is larger than the sum of its proper divisors (7907351815637).

61513603265323 is a wasteful number, since it uses less digits than its factorization.

61513603265323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3374258.

The product of its (nonzero) digits is 1749600, while the sum is 46.

Adding to 61513603265323 its reverse (32356230631516), we get a palindrome (93869833896839).

The spelling of 61513603265323 in words is "sixty-one trillion, five hundred thirteen billion, six hundred three million, two hundred sixty-five thousand, three hundred twenty-three".