61180904345 has 16 divisors (see below), whose sum is σ = 81404343360. Its totient is φ = 43765771200.

The previous prime is 61180904327. The next prime is 61180904363. The reversal of 61180904345 is 54340908116.

It is an interprime number because it is at equal distance from previous prime (61180904327) and next prime (61180904363).

It is not a de Polignac number, because 61180904345 - 2²⁰ = 61179855769 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9114515 + ... + 9121224.

It is an arithmetic number, because the mean of its divisors is an integer number (5087771460).

Almost surely, 2^61180904345 is an apocalyptic number.

It is an amenable number.

61180904345 is a deficient number, since it is larger than the sum of its proper divisors (20223439015).

61180904345 is a wasteful number, since it uses less digits than its factorization.

61180904345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18235816.

The product of its (nonzero) digits is 103680, while the sum is 41.

The spelling of 61180904345 in words is "sixty-one billion, one hundred eighty million, nine hundred four thousand, three hundred forty-five".