67665554331 has 4 divisors (see below), whose sum is σ = 90220739112. Its totient is φ = 45110369552.

The previous prime is 67665554321. The next prime is 67665554357. The reversal of 67665554331 is 13345556676.

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 67665554331 - 2⁶ = 67665554267 is a prime.

It is a super-2 number, since 2×67665554331² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (67665554321) 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, 11277592386 + ... + 11277592391.

It is an arithmetic number, because the mean of its divisors is an integer number (22555184778).

Almost surely, 2^67665554331 is an apocalyptic number.

67665554331 is a deficient number, since it is larger than the sum of its proper divisors (22555184781).

67665554331 is a wasteful number, since it uses less digits than its factorization.

67665554331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22555184780.

The product of its digits is 6804000, while the sum is 51.

The spelling of 67665554331 in words is "sixty-seven billion, six hundred sixty-five million, five hundred fifty-four thousand, three hundred thirty-one".