51100037389 has 2 divisors, whose sum is σ = 51100037390. Its totient is φ = 51100037388.

The previous prime is 51100037363. The next prime is 51100037399. The reversal of 51100037389 is 98373000115.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51045720489 + 54316900 = 225933^2 + 7370^2 .

It is a cyclic number.

It is not a de Polignac number, because 51100037389 - 2⁵ = 51100037357 is a prime.

It is a super-2 number, since 2×51100037389² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51100037399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25550018694 + 25550018695.

It is an arithmetic number, because the mean of its divisors is an integer number (25550018695).

Almost surely, 2^51100037389 is an apocalyptic number.

It is an amenable number.

51100037389 is a deficient number, since it is larger than the sum of its proper divisors (1).

51100037389 is an equidigital number, since it uses as much as digits as its factorization.

51100037389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 37.

The spelling of 51100037389 in words is "fifty-one billion, one hundred million, thirty-seven thousand, three hundred eighty-nine".