49820545777 has 2 divisors, whose sum is σ = 49820545778. Its totient is φ = 49820545776.

The previous prime is 49820545759. The next prime is 49820545787. The reversal of 49820545777 is 77754502894.

49820545777 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48157863601 + 1662682176 = 219449^2 + 40776^2 .

It is a cyclic number.

It is not a de Polignac number, because 49820545777 - 2¹⁵ = 49820513009 is a prime.

It is a super-3 number, since 3×49820545777³ (a number of 33 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (49820545787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24910272888 + 24910272889.

It is an arithmetic number, because the mean of its divisors is an integer number (24910272889).

Almost surely, 2^49820545777 is an apocalyptic number.

It is an amenable number.

49820545777 is a deficient number, since it is larger than the sum of its proper divisors (1).

49820545777 is an equidigital number, since it uses as much as digits as its factorization.

49820545777 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19756800, while the sum is 58.

The spelling of 49820545777 in words is "forty-nine billion, eight hundred twenty million, five hundred forty-five thousand, seven hundred seventy-seven".