20147186299 has 2 divisors, whose sum is σ = 20147186300. Its totient is φ = 20147186298.

The previous prime is 20147186263. The next prime is 20147186303. The reversal of 20147186299 is 99268174102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20147186299 - 2²¹ = 20145089147 is a prime.

It is a super-2 number, since 2×20147186299² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20147186209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10073593149 + 10073593150.

It is an arithmetic number, because the mean of its divisors is an integer number (10073593150).

Almost surely, 2^20147186299 is an apocalyptic number.

20147186299 is a deficient number, since it is larger than the sum of its proper divisors (1).

20147186299 is an equidigital number, since it uses as much as digits as its factorization.

20147186299 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 435456, while the sum is 49.

The spelling of 20147186299 in words is "twenty billion, one hundred forty-seven million, one hundred eighty-six thousand, two hundred ninety-nine".