67050781331 has 4 divisors (see below), whose sum is σ = 67217990664. Its totient is φ = 66883572000.

The previous prime is 67050781321. The next prime is 67050781333. The reversal of 67050781331 is 13318705076.

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 67050781331 - 2⁶ = 67050781267 is a prime.

It is a super-2 number, since 2×67050781331² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67050781333) 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, 83604065 + ... + 83604866.

It is an arithmetic number, because the mean of its divisors is an integer number (16804497666).

Almost surely, 2^67050781331 is an apocalyptic number.

67050781331 is a deficient number, since it is larger than the sum of its proper divisors (167209333).

67050781331 is a wasteful number, since it uses less digits than its factorization.

67050781331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167209332.

The product of its (nonzero) digits is 105840, while the sum is 41.

The spelling of 67050781331 in words is "sixty-seven billion, fifty million, seven hundred eighty-one thousand, three hundred thirty-one".