37978665859 has 8 divisors (see below), whose sum is σ = 38669123520. Its totient is φ = 37289766696.

The previous prime is 37978665827. The next prime is 37978665871. The reversal of 37978665859 is 95856687973.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 37978665859 - 2⁵ = 37978665827 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 37978665791 and 37978665800.

It is not an unprimeable number, because it can be changed into a prime (37978665359) 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 in 7 ways as a sum of consecutive naturals, for example, 340389 + ... + 437974.

It is an arithmetic number, because the mean of its divisors is an integer number (4833640440).

Almost surely, 2^37978665859 is an apocalyptic number.

37978665859 is a deficient number, since it is larger than the sum of its proper divisors (690457661).

37978665859 is an equidigital number, since it uses as much as digits as its factorization.

37978665859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779249.

The product of its digits is 685843200, while the sum is 73.

The spelling of 37978665859 in words is "thirty-seven billion, nine hundred seventy-eight million, six hundred sixty-five thousand, eight hundred fifty-nine".