61378093388 has 24 divisors (see below), whose sum is σ = 114815443680. Its totient is φ = 28638769280.

The previous prime is 61378093379. The next prime is 61378093453. The reversal of 61378093388 is 88339087316.

It is a happy number.

It is an unprimeable number.

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, 8132243 + ... + 8139786.

It is an arithmetic number, because the mean of its divisors is an integer number (4783976820).

Almost surely, 2^61378093388 is an apocalyptic number.

It is an amenable number.

61378093388 is a deficient number, since it is larger than the sum of its proper divisors (53437350292).

61378093388 is a wasteful number, since it uses less digits than its factorization.

61378093388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16272097 (or 16272095 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 56.

The spelling of 61378093388 in words is "sixty-one billion, three hundred seventy-eight million, ninety-three thousand, three hundred eighty-eight".