61334402145 has 8 divisors (see below), whose sum is σ = 98135043456. Its totient is φ = 32711681136.

The previous prime is 61334402141. The next prime is 61334402179. The reversal of 61334402145 is 54120443316.

It is a happy number.

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

It is not a de Polignac number, because 61334402145 - 2² = 61334402141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61334402141) 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, 2044480057 + ... + 2044480086.

It is an arithmetic number, because the mean of its divisors is an integer number (12266880432).

Almost surely, 2^61334402145 is an apocalyptic number.

It is an amenable number.

61334402145 is a deficient number, since it is larger than the sum of its proper divisors (36800641311).

61334402145 is a wasteful number, since it uses less digits than its factorization.

61334402145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4088960151.

The product of its (nonzero) digits is 34560, while the sum is 33.

The spelling of 61334402145 in words is "sixty-one billion, three hundred thirty-four million, four hundred two thousand, one hundred forty-five".