61338211187 has 8 divisors (see below), whose sum is σ = 67761431040. Its totient is φ = 55056161160.

The previous prime is 61338211177. The next prime is 61338211201. The reversal of 61338211187 is 78111283316.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61338211187 - 2⁸ = 61338210931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61338211127) 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 7 ways as a sum of consecutive naturals, for example, 35291543 + ... + 35293280.

It is an arithmetic number, because the mean of its divisors is an integer number (8470178880).

Almost surely, 2^61338211187 is an apocalyptic number.

61338211187 is a deficient number, since it is larger than the sum of its proper divisors (6423219853).

61338211187 is a wasteful number, since it uses less digits than its factorization.

61338211187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70584913.

The product of its digits is 48384, while the sum is 41.

The spelling of 61338211187 in words is "sixty-one billion, three hundred thirty-eight million, two hundred eleven thousand, one hundred eighty-seven".