61005378117 has 8 divisors (see below), whose sum is σ = 81456541920. Its totient is φ = 40612233200.

The previous prime is 61005378107. The next prime is 61005378121. The reversal of 61005378117 is 71187350016.

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

It is a cyclic number.

It is not a de Polignac number, because 61005378117 - 2⁶ = 61005378053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61005378107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14502267 + ... + 14506472.

It is an arithmetic number, because the mean of its divisors is an integer number (10182067740).

Almost surely, 2^61005378117 is an apocalyptic number.

It is an amenable number.

61005378117 is a deficient number, since it is larger than the sum of its proper divisors (20451163803).

61005378117 is a wasteful number, since it uses less digits than its factorization.

61005378117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29009443.

The product of its (nonzero) digits is 35280, while the sum is 39.

The spelling of 61005378117 in words is "sixty-one billion, five million, three hundred seventy-eight thousand, one hundred seventeen".