61516560362143 has 4 divisors (see below), whose sum is σ = 61519537518768. Its totient is φ = 61513583205520.

The previous prime is 61516560362087. The next prime is 61516560362161. The reversal of 61516560362143 is 34126306561516.

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 61516560362143 - 2²¹ = 61516558264991 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 (61516560366143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1488547318 + ... + 1488588643.

It is an arithmetic number, because the mean of its divisors is an integer number (15379884379692).

Almost surely, 2^{61516560362143} is an apocalyptic number.

61516560362143 is a deficient number, since it is larger than the sum of its proper divisors (2977156625).

61516560362143 is a wasteful number, since it uses less digits than its factorization.

61516560362143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2977156624.

The product of its (nonzero) digits is 2332800, while the sum is 49.

The spelling of 61516560362143 in words is "sixty-one trillion, five hundred sixteen billion, five hundred sixty million, three hundred sixty-two thousand, one hundred forty-three".