61101008802 has 80 divisors (see below), whose sum is σ = 143955127800. Its totient is φ = 19342229760.

The previous prime is 61101008797. The next prime is 61101008809. The reversal of 61101008802 is 20880010116.

It can be written as a sum of positive squares in 4 ways, for example, as 14051494521 + 47049514281 = 118539^2 + 216909^2 .

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

It is not an unprimeable number, because it can be changed into a prime (61101008809) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 179974 + ... + 393182.

Almost surely, 2^61101008802 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61101008802, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71977563900).

61101008802 is an abundant number, since it is smaller than the sum of its proper divisors (82854118998).

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

61101008802 is a wasteful number, since it uses less digits than its factorization.

61101008802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213313 (or 213304 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 27.

Adding to 61101008802 its reverse (20880010116), we get a palindrome (81981018918).

The spelling of 61101008802 in words is "sixty-one billion, one hundred one million, eight thousand, eight hundred two".