51381041037603 has 4 divisors (see below), whose sum is σ = 68508054716808. Its totient is φ = 34254027358400.

The previous prime is 51381041037589. The next prime is 51381041037659. The reversal of 51381041037603 is 30673014018315.

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 51381041037603 - 2⁶ = 51381041037539 is a prime.

It is a super-2 number, since 2×51381041037603² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51381041033603) 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, 8563506839598 + ... + 8563506839603.

It is an arithmetic number, because the mean of its divisors is an integer number (17127013679202).

Almost surely, 2^{51381041037603} is an apocalyptic number.

51381041037603 is a deficient number, since it is larger than the sum of its proper divisors (17127013679205).

51381041037603 is a wasteful number, since it uses less digits than its factorization.

51381041037603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17127013679204.

The product of its (nonzero) digits is 181440, while the sum is 42.

The spelling of 51381041037603 in words is "fifty-one trillion, three hundred eighty-one billion, forty-one million, thirty-seven thousand, six hundred three".