49406620169 has 2 divisors, whose sum is σ = 49406620170. Its totient is φ = 49406620168.

The previous prime is 49406620163. The next prime is 49406620187. The reversal of 49406620169 is 96102660494.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31956210169 + 17450410000 = 178763^2 + 132100^2 .

It is a cyclic number.

It is not a de Polignac number, because 49406620169 - 2¹² = 49406616073 is a prime.

It is a super-2 number, since 2×49406620169² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (49406620163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24703310084 + 24703310085.

It is an arithmetic number, because the mean of its divisors is an integer number (24703310085).

Almost surely, 2^49406620169 is an apocalyptic number.

It is an amenable number.

49406620169 is a deficient number, since it is larger than the sum of its proper divisors (1).

49406620169 is an equidigital number, since it uses as much as digits as its factorization.

49406620169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 559872, while the sum is 47.

The spelling of 49406620169 in words is "forty-nine billion, four hundred six million, six hundred twenty thousand, one hundred sixty-nine".