481256372137 has 4 divisors (see below), whose sum is σ = 509565570516. Its totient is φ = 452947173760.

The previous prime is 481256372123. The next prime is 481256372153. The reversal of 481256372137 is 731273652184.

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 273629425216 + 207626946921 = 523096^2 + 455661^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-481256372137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (481256372537) 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, 14154599164 + ... + 14154599197.

It is an arithmetic number, because the mean of its divisors is an integer number (127391392629).

Almost surely, 2^481256372137 is an apocalyptic number.

It is an amenable number.

481256372137 is a deficient number, since it is larger than the sum of its proper divisors (28309198379).

481256372137 is a wasteful number, since it uses less digits than its factorization.

481256372137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28309198378.

The product of its digits is 1693440, while the sum is 49.

The spelling of 481256372137 in words is "four hundred eighty-one billion, two hundred fifty-six million, three hundred seventy-two thousand, one hundred thirty-seven".