61475555345 has 8 divisors (see below), whose sum is σ = 73772539560. Its totient is φ = 49179195520.

The previous prime is 61475555341. The next prime is 61475555377. The reversal of 61475555345 is 54355557416.

It can be written as a sum of positive squares in 4 ways, for example, as 16746689281 + 44728866064 = 129409^2 + 211492^2 .

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

It is not a de Polignac number, because 61475555345 - 2² = 61475555341 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61475555293 and 61475555302.

It is not an unprimeable number, because it can be changed into a prime (61475555341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98165 + ... + 364125.

It is an arithmetic number, because the mean of its divisors is an integer number (9221567445).

Almost surely, 2^61475555345 is an apocalyptic number.

It is an amenable number.

61475555345 is a deficient number, since it is larger than the sum of its proper divisors (12296984215).

61475555345 is a wasteful number, since it uses less digits than its factorization.

61475555345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312195.

The product of its digits is 6300000, while the sum is 50.

The spelling of 61475555345 in words is "sixty-one billion, four hundred seventy-five million, five hundred fifty-five thousand, three hundred forty-five".