61564142334 has 8 divisors (see below), whose sum is σ = 123128284680. Its totient is φ = 20521380776.

The previous prime is 61564142333. The next prime is 61564142351. The reversal of 61564142334 is 43324146516.

61564142334 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

61564142334 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 61564142292 and 61564142301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61564142333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5130345189 + ... + 5130345200.

It is an arithmetic number, because the mean of its divisors is an integer number (15391035585).

Almost surely, 2^61564142334 is an apocalyptic number.

61564142334 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61564142334 is a wasteful number, since it uses less digits than its factorization.

61564142334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10260690394.

The product of its digits is 207360, while the sum is 39.

The spelling of 61564142334 in words is "sixty-one billion, five hundred sixty-four million, one hundred forty-two thousand, three hundred thirty-four".