61104537427 has 4 divisors (see below), whose sum is σ = 62404634016. Its totient is φ = 59804440840.

The previous prime is 61104537419. The next prime is 61104537433. The reversal of 61104537427 is 72473540116.

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 61104537427 - 2³ = 61104537419 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61104537427.

It is not an unprimeable number, because it can be changed into a prime (61104537497) 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, 650048224 + ... + 650048317.

It is an arithmetic number, because the mean of its divisors is an integer number (15601158504).

Almost surely, 2^61104537427 is an apocalyptic number.

61104537427 is a deficient number, since it is larger than the sum of its proper divisors (1300096589).

61104537427 is a wasteful number, since it uses less digits than its factorization.

61104537427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1300096588.

The product of its (nonzero) digits is 141120, while the sum is 40.

The spelling of 61104537427 in words is "sixty-one billion, one hundred four million, five hundred thirty-seven thousand, four hundred twenty-seven".