61540644623033 has 8 divisors (see below), whose sum is σ = 63621016454688. Its totient is φ = 59489781611904.

The previous prime is 61540644622997. The next prime is 61540644623039. The reversal of 61540644623033 is 33032644604516.

61540644623033 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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61540644623033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61540644623039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7377200891 + ... + 7377209232.

It is an arithmetic number, because the mean of its divisors is an integer number (7952627056836).

Almost surely, 2^{61540644623033} is an apocalyptic number.

It is an amenable number.

61540644623033 is a deficient number, since it is larger than the sum of its proper divisors (2080371831655).

61540644623033 is a wasteful number, since it uses less digits than its factorization.

61540644623033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14754410263.

The product of its (nonzero) digits is 3732480, while the sum is 47.

The spelling of 61540644623033 in words is "sixty-one trillion, five hundred forty billion, six hundred forty-four million, six hundred twenty-three thousand, thirty-three".