73627120661 has 4 divisors (see below), whose sum is σ = 73849559424. Its totient is φ = 73404681900.

The previous prime is 73627120643. The next prime is 73627120667. The reversal of 73627120661 is 16602172637.

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, and also an emirpimes, since its reverse is a distinct semiprime: 16602172637 = 53047 ⋅312971.

It is a cyclic number.

It is not a de Polignac number, because 73627120661 - 2¹⁰ = 73627119637 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 (73627120667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111218885 + ... + 111219546.

It is an arithmetic number, because the mean of its divisors is an integer number (18462389856).

Almost surely, 2^73627120661 is an apocalyptic number.

It is an amenable number.

73627120661 is a deficient number, since it is larger than the sum of its proper divisors (222438763).

73627120661 is a wasteful number, since it uses less digits than its factorization.

73627120661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222438762.

The product of its (nonzero) digits is 127008, while the sum is 41.

The spelling of 73627120661 in words is "seventy-three billion, six hundred twenty-seven million, one hundred twenty thousand, six hundred sixty-one".