61110550560511 has 4 divisors (see below), whose sum is σ = 61134791162224. Its totient is φ = 61086309958800.

The previous prime is 61110550560497. The next prime is 61110550560551. The reversal of 61110550560511 is 11506505501116.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61110550560511 - 2³¹ = 61108403076863 is a prime.

It is a super-2 number, since 2×61110550560511² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61110550560551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12120297075 + ... + 12120302116.

It is an arithmetic number, because the mean of its divisors is an integer number (15283697790556).

Almost surely, 2^{61110550560511} is an apocalyptic number.

61110550560511 is a deficient number, since it is larger than the sum of its proper divisors (24240601713).

61110550560511 is a wasteful number, since it uses less digits than its factorization.

61110550560511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24240601712.

The product of its (nonzero) digits is 22500, while the sum is 37.

The spelling of 61110550560511 in words is "sixty-one trillion, one hundred ten billion, five hundred fifty million, five hundred sixty thousand, five hundred eleven".