67240858445 has 4 divisors (see below), whose sum is σ = 80689030140. Its totient is φ = 53792686752.

The previous prime is 67240858441. The next prime is 67240858459. The reversal of 67240858445 is 54485804276.

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 33730260964 + 33510597481 = 183658^2 + 183059^2 .

It is a cyclic number.

It is not a de Polignac number, because 67240858445 - 2² = 67240858441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67240858441) 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, 6724085840 + ... + 6724085849.

It is an arithmetic number, because the mean of its divisors is an integer number (20172257535).

Almost surely, 2^67240858445 is an apocalyptic number.

It is an amenable number.

67240858445 is a deficient number, since it is larger than the sum of its proper divisors (13448171695).

67240858445 is a wasteful number, since it uses less digits than its factorization.

67240858445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13448171694.

The product of its (nonzero) digits is 8601600, while the sum is 53.

The spelling of 67240858445 in words is "sixty-seven billion, two hundred forty million, eight hundred fifty-eight thousand, four hundred forty-five".