61331661623041 has 4 divisors (see below), whose sum is σ = 62636590593792. Its totient is φ = 60026732652292.

The previous prime is 61331661622991. The next prime is 61331661623051. The reversal of 61331661623041 is 14032616613316.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61331661623041 - 2⁹ = 61331661622529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61331661623051) 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, 652464485305 + ... + 652464485398.

It is an arithmetic number, because the mean of its divisors is an integer number (15659147648448).

Almost surely, 2^{61331661623041} is an apocalyptic number.

It is an amenable number.

61331661623041 is a deficient number, since it is larger than the sum of its proper divisors (1304928970751).

61331661623041 is a wasteful number, since it uses less digits than its factorization.

61331661623041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1304928970750.

The product of its (nonzero) digits is 279936, while the sum is 43.

The spelling of 61331661623041 in words is "sixty-one trillion, three hundred thirty-one billion, six hundred sixty-one million, six hundred twenty-three thousand, forty-one".