61101005562 has 80 divisors (see below), whose sum is σ = 144303999840. Its totient is φ = 19270071072.

The previous prime is 61101005521. The next prime is 61101005593. The reversal of 61101005562 is 26550010116.

It is a happy number.

61101005562 is a `hidden beast` number, since 6 + 1 + 1 + 0 + 100 + 556 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 2440713 + ... + 2465619.

It is an arithmetic number, because the mean of its divisors is an integer number (1803799998).

Almost surely, 2^61101005562 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61101005562, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72151999920).

61101005562 is an abundant number, since it is smaller than the sum of its proper divisors (83202994278).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61101005562 is a wasteful number, since it uses less digits than its factorization.

61101005562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25737 (or 25728 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

Adding to 61101005562 its reverse (26550010116), we get a palindrome (87651015678).

The spelling of 61101005562 in words is "sixty-one billion, one hundred one million, five thousand, five hundred sixty-two".