51050156990489 has 2 divisors, whose sum is σ = 51050156990490. Its totient is φ = 51050156990488.

The previous prime is 51050156990429. The next prime is 51050156990507. The reversal of 51050156990489 is 98409965105015.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32258798980489 + 18791358010000 = 5679683^2 + 4334900^2 .

It is a cyclic number.

It is not a de Polignac number, because 51050156990489 - 2³² = 51045862023193 is a prime.

It is a super-2 number, since 2×51050156990489² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51050156990419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25525078495244 + 25525078495245.

It is an arithmetic number, because the mean of its divisors is an integer number (25525078495245).

Almost surely, 2^{51050156990489} is an apocalyptic number.

It is an amenable number.

51050156990489 is a deficient number, since it is larger than the sum of its proper divisors (1).

51050156990489 is an equidigital number, since it uses as much as digits as its factorization.

51050156990489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496000, while the sum is 62.

The spelling of 51050156990489 in words is "fifty-one trillion, fifty billion, one hundred fifty-six million, nine hundred ninety thousand, four hundred eighty-nine".