77485050390 has 32 divisors (see below), whose sum is σ = 202869950976. Its totient is φ = 18784254560.

The previous prime is 77485050361. The next prime is 77485050457. The reversal of 77485050390 is 9305058477.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117401262 + ... + 117401921.

It is an arithmetic number, because the mean of its divisors is an integer number (6339685968).

Almost surely, 2^77485050390 is an apocalyptic number.

77485050390 is an abundant number, since it is smaller than the sum of its proper divisors (125384900586).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77485050390 is a wasteful number, since it uses less digits than its factorization.

77485050390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234803204.

The product of its (nonzero) digits is 1058400, while the sum is 48.

The spelling of 77485050390 in words is "seventy-seven billion, four hundred eighty-five million, fifty thousand, three hundred ninety".