51025140619 has 2 divisors, whose sum is σ = 51025140620. Its totient is φ = 51025140618.

The previous prime is 51025140589. The next prime is 51025140629. The reversal of 51025140619 is 91604152015.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51025140619 is a prime.

It is a super-2 number, since 2×51025140619² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51025140629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25512570309 + 25512570310.

It is an arithmetic number, because the mean of its divisors is an integer number (25512570310).

Almost surely, 2^51025140619 is an apocalyptic number.

51025140619 is a deficient number, since it is larger than the sum of its proper divisors (1).

51025140619 is an equidigital number, since it uses as much as digits as its factorization.

51025140619 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 34.

The spelling of 51025140619 in words is "fifty-one billion, twenty-five million, one hundred forty thousand, six hundred nineteen".