20147290369 has 2 divisors, whose sum is σ = 20147290370. Its totient is φ = 20147290368.

The previous prime is 20147290343. The next prime is 20147290399. The reversal of 20147290369 is 96309274102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14193624769 + 5953665600 = 119137^2 + 77160^2 .

It is a cyclic number.

It is not a de Polignac number, because 20147290369 - 2¹¹ = 20147288321 is a prime.

It is a super-2 number, since 2×20147290369² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20147290399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10073645184 + 10073645185.

It is an arithmetic number, because the mean of its divisors is an integer number (10073645185).

Almost surely, 2^20147290369 is an apocalyptic number.

It is an amenable number.

20147290369 is a deficient number, since it is larger than the sum of its proper divisors (1).

20147290369 is an equidigital number, since it uses as much as digits as its factorization.

20147290369 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 43.

The spelling of 20147290369 in words is "twenty billion, one hundred forty-seven million, two hundred ninety thousand, three hundred sixty-nine".