73987876085761 has 4 divisors (see below), whose sum is σ = 80714046639024. Its totient is φ = 67261705532500.

The previous prime is 73987876085729. The next prime is 73987876085779. The reversal of 73987876085761 is 16758067878937.

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 73987876085761 - 2⁵ = 73987876085729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73987876082761) 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, 3363085276615 + ... + 3363085276636.

It is an arithmetic number, because the mean of its divisors is an integer number (20178511659756).

Almost surely, 2^{73987876085761} is an apocalyptic number.

It is an amenable number.

73987876085761 is a deficient number, since it is larger than the sum of its proper divisors (6726170553263).

73987876085761 is a wasteful number, since it uses less digits than its factorization.

73987876085761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6726170553262.

The product of its (nonzero) digits is 5974456320, while the sum is 82.

The spelling of 73987876085761 in words is "seventy-three trillion, nine hundred eighty-seven billion, eight hundred seventy-six million, eighty-five thousand, seven hundred sixty-one".