7072067881537 has 4 divisors (see below), whose sum is σ = 7098358096980. Its totient is φ = 7045777666096.

The previous prime is 7072067881531. The next prime is 7072067881547. The reversal of 7072067881537 is 7351887602707.

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 2485891442241 + 4586176439296 = 1576671^2 + 2141536^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7072067881537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7072067881531) 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, 13145107318 + ... + 13145107855.

It is an arithmetic number, because the mean of its divisors is an integer number (1774589524245).

Almost surely, 2^{7072067881537} is an apocalyptic number.

It is an amenable number.

7072067881537 is a deficient number, since it is larger than the sum of its proper divisors (26290215443).

7072067881537 is a wasteful number, since it uses less digits than its factorization.

7072067881537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26290215442.

The product of its (nonzero) digits is 27659520, while the sum is 61.

The spelling of 7072067881537 in words is "seven trillion, seventy-two billion, sixty-seven million, eight hundred eighty-one thousand, five hundred thirty-seven".