61005388534 has 8 divisors (see below), whose sum is σ = 91726480440. Its totient is φ = 30429895056.

The previous prime is 61005388519. The next prime is 61005388571. The reversal of 61005388534 is 43588350016.

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

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 36398559 + ... + 36400234.

It is an arithmetic number, because the mean of its divisors is an integer number (11465810055).

Almost surely, 2^61005388534 is an apocalyptic number.

61005388534 is a deficient number, since it is larger than the sum of its proper divisors (30721091906).

61005388534 is a wasteful number, since it uses less digits than its factorization.

61005388534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72799214.

The product of its (nonzero) digits is 345600, while the sum is 43.

The spelling of 61005388534 in words is "sixty-one billion, five million, three hundred eighty-eight thousand, five hundred thirty-four".