61305760137 has 8 divisors (see below), whose sum is σ = 81817914304. Its totient is φ = 40832056368.

The previous prime is 61305760129. The next prime is 61305760151. The reversal of 61305760137 is 73106750316.

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

It is not a de Polignac number, because 61305760137 - 2³ = 61305760129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61305760095 and 61305760104.

It is not an unprimeable number, because it can be changed into a prime (61305760157) 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, 9608878 + ... + 9615255.

It is an arithmetic number, because the mean of its divisors is an integer number (10227239288).

Almost surely, 2^61305760137 is an apocalyptic number.

It is an amenable number.

61305760137 is a deficient number, since it is larger than the sum of its proper divisors (20512154167).

61305760137 is a wasteful number, since it uses less digits than its factorization.

61305760137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19225199.

The product of its (nonzero) digits is 79380, while the sum is 39.

The spelling of 61305760137 in words is "sixty-one billion, three hundred five million, seven hundred sixty thousand, one hundred thirty-seven".