73640020372705 has 8 divisors (see below), whose sum is σ = 88396447761000. Its totient is φ = 58893067422336.

The previous prime is 73640020372703. The next prime is 73640020372741. The reversal of 73640020372705 is 50727302004637.

It can be written as a sum of positive squares in 4 ways, for example, as 100408498129 + 73539611874576 = 316873^2 + 8575524^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 73640020372705 - 2¹ = 73640020372703 is a prime.

It is not an unprimeable number, because it can be changed into a prime (73640020372703) 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, 2368592380 + ... + 2368623469.

It is an arithmetic number, because the mean of its divisors is an integer number (11049555970125).

Almost surely, 2^{73640020372705} is an apocalyptic number.

It is an amenable number.

73640020372705 is a deficient number, since it is larger than the sum of its proper divisors (14756427388295).

73640020372705 is a wasteful number, since it uses less digits than its factorization.

73640020372705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4737218963.

The product of its (nonzero) digits is 1481760, while the sum is 46.

The spelling of 73640020372705 in words is "seventy-three trillion, six hundred forty billion, twenty million, three hundred seventy-two thousand, seven hundred five".