61101005560 has 64 divisors (see below), whose sum is σ = 158354104320. Its totient is φ = 20783952000.

The previous prime is 61101005521. The next prime is 61101005593. The reversal of 61101005560 is 6550010116.

It is a super-3 number, since 3×61101005560³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 823566 + ... + 894685.

It is an arithmetic number, because the mean of its divisors is an integer number (2474282880).

Almost surely, 2^61101005560 is an apocalyptic number.

It is an amenable number.

61101005560 is an abundant number, since it is smaller than the sum of its proper divisors (97253098760).

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

61101005560 is a wasteful number, since it uses less digits than its factorization.

61101005560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1718396 (or 1718392 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 25.

Adding to 61101005560 its reverse (6550010116), we get a palindrome (67651015676).

The spelling of 61101005560 in words is "sixty-one billion, one hundred one million, five thousand, five hundred sixty".