67263225137 has 4 divisors (see below), whose sum is σ = 67267221876. Its totient is φ = 67259228400.

The previous prime is 67263225131. The next prime is 67263225157. The reversal of 67263225137 is 73152236276.

It is a happy number.

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 66778829056 + 484396081 = 258416^2 + 22009^2 .

It is a cyclic number.

It is not a de Polignac number, because 67263225137 - 2⁴ = 67263225121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67263225131) 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, 1973018 + ... + 2006819.

It is an arithmetic number, because the mean of its divisors is an integer number (16816805469).

Almost surely, 2^67263225137 is an apocalyptic number.

It is an amenable number.

67263225137 is a deficient number, since it is larger than the sum of its proper divisors (3996739).

67263225137 is a wasteful number, since it uses less digits than its factorization.

67263225137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3996738.

The product of its digits is 635040, while the sum is 44.

The spelling of 67263225137 in words is "sixty-seven billion, two hundred sixty-three million, two hundred twenty-five thousand, one hundred thirty-seven".