51541453019 has 4 divisors (see below), whose sum is σ = 58904517744. Its totient is φ = 44178388296.

The previous prime is 51541453001. The next prime is 51541453063. The reversal of 51541453019 is 91035414515.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91035414515 = 5 ⋅18207082903.

It is not a de Polignac number, because 51541453019 - 2¹² = 51541448923 is a prime.

It is a super-2 number, since 2×51541453019² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51541453099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3681532352 + ... + 3681532365.

It is an arithmetic number, because the mean of its divisors is an integer number (14726129436).

Almost surely, 2^51541453019 is an apocalyptic number.

51541453019 is a deficient number, since it is larger than the sum of its proper divisors (7363064725).

51541453019 is an equidigital number, since it uses as much as digits as its factorization.

51541453019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7363064724.

The product of its (nonzero) digits is 54000, while the sum is 38.

The spelling of 51541453019 in words is "fifty-one billion, five hundred forty-one million, four hundred fifty-three thousand, nineteen".