20200861019 has 2 divisors, whose sum is σ = 20200861020. Its totient is φ = 20200861018.

The previous prime is 20200860989. The next prime is 20200861033. The reversal of 20200861019 is 91016800202.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20200861019 is a prime.

It is a super-2 number, since 2×20200861019² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20200860982 and 20200861000.

It is not a weakly prime, because it can be changed into another prime (20200861039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10100430509 + 10100430510.

It is an arithmetic number, because the mean of its divisors is an integer number (10100430510).

Almost surely, 2^20200861019 is an apocalyptic number.

20200861019 is a deficient number, since it is larger than the sum of its proper divisors (1).

20200861019 is an equidigital number, since it uses as much as digits as its factorization.

20200861019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 29.

The spelling of 20200861019 in words is "twenty billion, two hundred million, eight hundred sixty-one thousand, nineteen".