51405403132001 has 4 divisors (see below), whose sum is σ = 51465667380372. Its totient is φ = 51345138883632.

The previous prime is 51405403131991. The next prime is 51405403132009. The reversal of 51405403132001 is 10023130450415.

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 10202817814225 + 41202585317776 = 3194185^2 + 6418924^2 .

It is a cyclic number.

It is not a de Polignac number, because 51405403132001 - 2¹⁸ = 51405402869857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51405403132009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30132122906 + ... + 30132124611.

It is an arithmetic number, because the mean of its divisors is an integer number (12866416845093).

Almost surely, 2^{51405403132001} is an apocalyptic number.

It is an amenable number.

51405403132001 is a deficient number, since it is larger than the sum of its proper divisors (60264248371).

51405403132001 is an equidigital number, since it uses as much as digits as its factorization.

51405403132001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60264248370.

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 51405403132001 its reverse (10023130450415), we get a palindrome (61428533582416).

The spelling of 51405403132001 in words is "fifty-one trillion, four hundred five billion, four hundred three million, one hundred thirty-two thousand, one".