39426819631987 has 2 divisors, whose sum is σ = 39426819631988. Its totient is φ = 39426819631986.

The previous prime is 39426819631939. The next prime is 39426819632051. The reversal of 39426819631987 is 78913691862493.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39426819631987 is a prime.

It is a super-2 number, since 2×39426819631987² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (39426819631187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19713409815993 + 19713409815994.

It is an arithmetic number, because the mean of its divisors is an integer number (19713409815994).

Almost surely, 2^{39426819631987} is an apocalyptic number.

39426819631987 is a deficient number, since it is larger than the sum of its proper divisors (1).

39426819631987 is an equidigital number, since it uses as much as digits as its factorization.

39426819631987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 846526464, while the sum is 76.

The spelling of 39426819631987 in words is "thirty-nine trillion, four hundred twenty-six billion, eight hundred nineteen million, six hundred thirty-one thousand, nine hundred eighty-seven".