67323575475661 has 4 divisors (see below), whose sum is σ = 69645078078300. Its totient is φ = 65002072873024.

The previous prime is 67323575475647. The next prime is 67323575475803. The reversal of 67323575475661 is 16657457532376.

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

It can be written as a sum of positive squares in 2 ways, for example, as 57076982414761 + 10246593060900 = 7554931^2 + 3201030^2 .

It is a cyclic number.

It is not a de Polignac number, because 67323575475661 - 2¹³ = 67323575467469 is a prime.

It is a super-3 number, since 3×67323575475661³ (a number of 42 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67323575475161) 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, 1160751301276 + ... + 1160751301333.

It is an arithmetic number, because the mean of its divisors is an integer number (17411269519575).

Almost surely, 2^{67323575475661} is an apocalyptic number.

It is an amenable number.

67323575475661 is a deficient number, since it is larger than the sum of its proper divisors (2321502602639).

67323575475661 is a wasteful number, since it uses less digits than its factorization.

67323575475661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2321502602638.

The product of its digits is 666792000, while the sum is 67.

The spelling of 67323575475661 in words is "sixty-seven trillion, three hundred twenty-three billion, five hundred seventy-five million, four hundred seventy-five thousand, six hundred sixty-one".