37646485979 has 2 divisors, whose sum is σ = 37646485980. Its totient is φ = 37646485978.

The previous prime is 37646485973. The next prime is 37646486023. The reversal of 37646485979 is 97958464673.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-37646485979 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (37646485973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18823242989 + 18823242990.

It is an arithmetic number, because the mean of its divisors is an integer number (18823242990).

Almost surely, 2^37646485979 is an apocalyptic number.

37646485979 is a deficient number, since it is larger than the sum of its proper divisors (1).

37646485979 is an equidigital number, since it uses as much as digits as its factorization.

37646485979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 274337280, while the sum is 68.

The spelling of 37646485979 in words is "thirty-seven billion, six hundred forty-six million, four hundred eighty-five thousand, nine hundred seventy-nine".