61516320566003 has 4 divisors (see below), whose sum is σ = 63500718003648. Its totient is φ = 59531923128360.

The previous prime is 61516320565981. The next prime is 61516320566053. The reversal of 61516320566003 is 30066502361516.

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 61516320566003 - 2⁴² = 57118274054899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61516320566053) 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, 992198718776 + ... + 992198718837.

It is an arithmetic number, because the mean of its divisors is an integer number (15875179500912).

Almost surely, 2^{61516320566003} is an apocalyptic number.

61516320566003 is a deficient number, since it is larger than the sum of its proper divisors (1984397437645).

61516320566003 is a wasteful number, since it uses less digits than its factorization.

61516320566003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1984397437644.

The product of its (nonzero) digits is 583200, while the sum is 44.

The spelling of 61516320566003 in words is "sixty-one trillion, five hundred sixteen billion, three hundred twenty million, five hundred sixty-six thousand, three".