20049158747 has 2 divisors, whose sum is σ = 20049158748. Its totient is φ = 20049158746.

The previous prime is 20049158741. The next prime is 20049158791. The reversal of 20049158747 is 74785194002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20049158747 - 2⁶ = 20049158683 is a prime.

It is a super-2 number, since 2×20049158747² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20049158741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10024579373 + 10024579374.

It is an arithmetic number, because the mean of its divisors is an integer number (10024579374).

Almost surely, 2^20049158747 is an apocalyptic number.

20049158747 is a deficient number, since it is larger than the sum of its proper divisors (1).

20049158747 is an equidigital number, since it uses as much as digits as its factorization.

20049158747 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 564480, while the sum is 47.

The spelling of 20049158747 in words is "twenty billion, forty-nine million, one hundred fifty-eight thousand, seven hundred forty-seven".