61611121427526 has 48 divisors (see below), whose sum is σ = 146152013808528. Its totient is φ = 18602635924800.

The previous prime is 61611121427521. The next prime is 61611121427621. The reversal of 61611121427526 is 62572412111616.

61611121427526 is a `hidden beast` number, since 6 + 1 + 6 + 1 + 112 + 1 + 4 + 2 + 7 + 526 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61611121427521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 561618945 + ... + 561728636.

It is an arithmetic number, because the mean of its divisors is an integer number (3044833621011).

Almost surely, 2^{61611121427526} is an apocalyptic number.

61611121427526 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

61611121427526 is an abundant number, since it is smaller than the sum of its proper divisors (84540892381002).

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

61611121427526 is a wasteful number, since it uses less digits than its factorization.

61611121427526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1123347877 (or 1123347874 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The spelling of 61611121427526 in words is "sixty-one trillion, six hundred eleven billion, one hundred twenty-one million, four hundred twenty-seven thousand, five hundred twenty-six".