61534563630442 has 32 divisors (see below), whose sum is σ = 109127636985600. Its totient is φ = 25462040811648.

The previous prime is 61534563630427. The next prime is 61534563630443. The reversal of 61534563630442 is 24403636543516.

It is a super-2 number, since 2×61534563630442² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 61534563630442.

It is not an unprimeable number, because it can be changed into a prime (61534563630443) 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 15 ways as a sum of consecutive naturals, for example, 17961438 + ... + 21111190.

It is an arithmetic number, because the mean of its divisors is an integer number (3410238655800).

Almost surely, 2^{61534563630442} is an apocalyptic number.

61534563630442 is a deficient number, since it is larger than the sum of its proper divisors (47593073355158).

61534563630442 is a wasteful number, since it uses less digits than its factorization.

61534563630442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3197910.

The product of its (nonzero) digits is 18662400, while the sum is 52.

The spelling of 61534563630442 in words is "sixty-one trillion, five hundred thirty-four billion, five hundred sixty-three million, six hundred thirty thousand, four hundred forty-two".