73656346554551 has 4 divisors (see below), whose sum is σ = 74236317787392. Its totient is φ = 73076375321712.

The previous prime is 73656346554541. The next prime is 73656346554587. The reversal of 73656346554551 is 15545564365637.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 73656346554551 - 2¹⁰ = 73656346553527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73656346554541) 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, 289985616230 + ... + 289985616483.

It is an arithmetic number, because the mean of its divisors is an integer number (18559079446848).

Almost surely, 2^{73656346554551} is an apocalyptic number.

73656346554551 is a deficient number, since it is larger than the sum of its proper divisors (579971232841).

73656346554551 is a wasteful number, since it uses less digits than its factorization.

73656346554551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579971232840.

The product of its digits is 680400000, while the sum is 65.

The spelling of 73656346554551 in words is "seventy-three trillion, six hundred fifty-six billion, three hundred forty-six million, five hundred fifty-four thousand, five hundred fifty-one".