61273996650735 has 24 divisors (see below), whose sum is σ = 107761210641840. Its totient is φ = 29708604435840.

The previous prime is 61273996650733. The next prime is 61273996650739. The reversal of 61273996650735 is 53705669937216.

It is not a de Polignac number, because 61273996650735 - 2¹ = 61273996650733 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61273996650735.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61273996650733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16879887070 + ... + 16879890699.

It is an arithmetic number, because the mean of its divisors is an integer number (4490050443410).

Almost surely, 2^{61273996650735} is an apocalyptic number.

61273996650735 is a deficient number, since it is larger than the sum of its proper divisors (46487213991105).

61273996650735 is a wasteful number, since it uses less digits than its factorization.

61273996650735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33759777799 (or 33759777788 counting only the distinct ones).

The product of its (nonzero) digits is 385786800, while the sum is 69.

The spelling of 61273996650735 in words is "sixty-one trillion, two hundred seventy-three billion, nine hundred ninety-six million, six hundred fifty thousand, seven hundred thirty-five".