75173700661 has 8 divisors (see below), whose sum is σ = 75320259840. Its totient is φ = 75027188832.

The previous prime is 75173700619. The next prime is 75173700673. The reversal of 75173700661 is 16600737157.

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 75173700661 - 2¹³ = 75173692469 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 (75173700691) 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, 6425305 + ... + 6436993.

It is an arithmetic number, because the mean of its divisors is an integer number (9415032480).

Almost surely, 2^75173700661 is an apocalyptic number.

It is an amenable number.

75173700661 is a deficient number, since it is larger than the sum of its proper divisors (146559179).

75173700661 is a wasteful number, since it uses less digits than its factorization.

75173700661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23675.

The product of its (nonzero) digits is 185220, while the sum is 43.

The spelling of 75173700661 in words is "seventy-five billion, one hundred seventy-three million, seven hundred thousand, six hundred sixty-one".