37499978897 has 2 divisors, whose sum is σ = 37499978898. Its totient is φ = 37499978896.

The previous prime is 37499978837. The next prime is 37499978959. The reversal of 37499978897 is 79887999473.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31488147601 + 6011831296 = 177449^2 + 77536^2 .

It is an emirp because it is prime and its reverse (79887999473) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 37499978897 - 2¹⁰ = 37499977873 is a prime.

It is not a weakly prime, because it can be changed into another prime (37499978837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18749989448 + 18749989449.

It is an arithmetic number, because the mean of its divisors is an integer number (18749989449).

Almost surely, 2^37499978897 is an apocalyptic number.

It is an amenable number.

37499978897 is a deficient number, since it is larger than the sum of its proper divisors (1).

37499978897 is an equidigital number, since it uses as much as digits as its factorization.

37499978897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728324864, while the sum is 80.

The spelling of 37499978897 in words is "thirty-seven billion, four hundred ninety-nine million, nine hundred seventy-eight thousand, eight hundred ninety-seven".