61613761297517 has 16 divisors (see below), whose sum is σ = 72388923573120. Its totient is φ = 51701337288000.

The previous prime is 61613761297507. The next prime is 61613761297547. The reversal of 61613761297517 is 71579216731616.

61613761297517 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 61613761297517 - 2³² = 61609466330221 is a prime.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 61613761297517.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61613761297507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7544042 + ... + 13421627.

It is an arithmetic number, because the mean of its divisors is an integer number (4524307723320).

Almost surely, 2^{61613761297517} is an apocalyptic number.

It is an amenable number.

61613761297517 is a deficient number, since it is larger than the sum of its proper divisors (10775162275603).

61613761297517 is a wasteful number, since it uses less digits than its factorization.

61613761297517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20986244.

The product of its digits is 20003760, while the sum is 62.

The spelling of 61613761297517 in words is "sixty-one trillion, six hundred thirteen billion, seven hundred sixty-one million, two hundred ninety-seven thousand, five hundred seventeen".