20002462643 has 2 divisors, whose sum is σ = 20002462644. Its totient is φ = 20002462642.

The previous prime is 20002462577. The next prime is 20002462657. The reversal of 20002462643 is 34626420002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20002462643 - 2⁸ = 20002462387 is a prime.

It is a super-2 number, since 2×20002462643² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (20002462943) 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, 10001231321 + 10001231322.

It is an arithmetic number, because the mean of its divisors is an integer number (10001231322).

Almost surely, 2^20002462643 is an apocalyptic number.

20002462643 is a deficient number, since it is larger than the sum of its proper divisors (1).

20002462643 is an equidigital number, since it uses as much as digits as its factorization.

20002462643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 20002462643 its reverse (34626420002), we get a palindrome (54628882645).

The spelling of 20002462643 in words is "twenty billion, two million, four hundred sixty-two thousand, six hundred forty-three".