61534605320566 has 16 divisors (see below), whose sum is σ = 105488007023520. Its totient is φ = 26371945661760.

The previous prime is 61534605320563. The next prime is 61534605320627. The reversal of 61534605320566 is 66502350643516.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61534605320563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16572036 + ... + 19942456.

It is an arithmetic number, because the mean of its divisors is an integer number (6593000438970).

Almost surely, 2^{61534605320566} is an apocalyptic number.

61534605320566 is a deficient number, since it is larger than the sum of its proper divisors (43953401702954).

61534605320566 is a wasteful number, since it uses less digits than its factorization.

61534605320566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4674519.

The product of its (nonzero) digits is 11664000, while the sum is 52.

The spelling of 61534605320566 in words is "sixty-one trillion, five hundred thirty-four billion, six hundred five million, three hundred twenty thousand, five hundred sixty-six".