20020329947 has 2 divisors, whose sum is σ = 20020329948. Its totient is φ = 20020329946.

The previous prime is 20020329943. The next prime is 20020330027. The reversal of 20020329947 is 74992302002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20020329947 - 2² = 20020329943 is a prime.

It is a super-2 number, since 2×20020329947² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20020329947.

It is not a weakly prime, because it can be changed into another prime (20020329941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10010164973 + 10010164974.

It is an arithmetic number, because the mean of its divisors is an integer number (10010164974).

Almost surely, 2^20020329947 is an apocalyptic number.

20020329947 is a deficient number, since it is larger than the sum of its proper divisors (1).

20020329947 is an equidigital number, since it uses as much as digits as its factorization.

20020329947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 38.

The spelling of 20020329947 in words is "twenty billion, twenty million, three hundred twenty-nine thousand, nine hundred forty-seven".