20344650601487 has 2 divisors, whose sum is σ = 20344650601488. Its totient is φ = 20344650601486.

The previous prime is 20344650601441. The next prime is 20344650601507. The reversal of 20344650601487 is 78410605644302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20344650601487 - 2⁴² = 15946604090383 is a prime.

It is a super-2 number, since 2×20344650601487² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20349650601487) 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, 10172325300743 + 10172325300744.

It is an arithmetic number, because the mean of its divisors is an integer number (10172325300744).

Almost surely, 2^{20344650601487} is an apocalyptic number.

20344650601487 is a deficient number, since it is larger than the sum of its proper divisors (1).

20344650601487 is an equidigital number, since it uses as much as digits as its factorization.

20344650601487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3870720, while the sum is 50.

The spelling of 20344650601487 in words is "twenty trillion, three hundred forty-four billion, six hundred fifty million, six hundred one thousand, four hundred eighty-seven".