68744693053 has 8 divisors (see below), whose sum is σ = 71123221080. Its totient is φ = 66366699840.

The previous prime is 68744692981. The next prime is 68744693057. The reversal of 68744693053 is 35039644786.

It can be written as a sum of positive squares in 4 ways, for example, as 24218206884 + 44526486169 = 155622^2 + 211013^2 .

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-68744693053 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68744692985 and 68744693003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68744693057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137151 + ... + 395347.

It is an arithmetic number, because the mean of its divisors is an integer number (8890402635).

Almost surely, 2^68744693053 is an apocalyptic number.

It is an amenable number.

68744693053 is a deficient number, since it is larger than the sum of its proper divisors (2378528027).

68744693053 is a wasteful number, since it uses less digits than its factorization.

68744693053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267407.

The product of its (nonzero) digits is 13063680, while the sum is 55.

The spelling of 68744693053 in words is "sixty-eight billion, seven hundred forty-four million, six hundred ninety-three thousand, fifty-three".