61110055100550 has 48 divisors (see below), whose sum is σ = 151560597817872. Its totient is φ = 16295190912000.

The previous prime is 61110055100491. The next prime is 61110055100569. The reversal of 61110055100550 is 5500155001116.

It is a super-2 number, since 2×61110055100550² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7317219 + ... + 13257518.

It is an arithmetic number, because the mean of its divisors is an integer number (3157512454539).

Almost surely, 2^{61110055100550} is an apocalyptic number.

61110055100550 is an abundant number, since it is smaller than the sum of its proper divisors (90450542717322).

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

61110055100550 is a wasteful number, since it uses less digits than its factorization.

61110055100550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20594553 (or 20594548 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 30.

The spelling of 61110055100550 in words is "sixty-one trillion, one hundred ten billion, fifty-five million, one hundred thousand, five hundred fifty".