49371503809 has 2 divisors, whose sum is σ = 49371503810. Its totient is φ = 49371503808.

The previous prime is 49371503777. The next prime is 49371503827. The reversal of 49371503809 is 90830517394.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29482607025 + 19888896784 = 171705^2 + 141028^2 .

It is a cyclic number.

It is not a de Polignac number, because 49371503809 - 2⁵ = 49371503777 is a prime.

It is not a weakly prime, because it can be changed into another prime (49371503849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24685751904 + 24685751905.

It is an arithmetic number, because the mean of its divisors is an integer number (24685751905).

Almost surely, 2^49371503809 is an apocalyptic number.

It is an amenable number.

49371503809 is a deficient number, since it is larger than the sum of its proper divisors (1).

49371503809 is an equidigital number, since it uses as much as digits as its factorization.

49371503809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 816480, while the sum is 49.

The spelling of 49371503809 in words is "forty-nine billion, three hundred seventy-one million, five hundred three thousand, eight hundred nine".