77378175090 has 48 divisors (see below), whose sum is σ = 201206094336. Its totient is φ = 20631837600.

The previous prime is 77378175071. The next prime is 77378175101. The reversal of 77378175090 is 9057187377.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 837285 + ... + 925095.

It is an arithmetic number, because the mean of its divisors is an integer number (4191793632).

Almost surely, 2^77378175090 is an apocalyptic number.

77378175090 is an abundant number, since it is smaller than the sum of its proper divisors (123827919246).

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

77378175090 is a wasteful number, since it uses less digits than its factorization.

77378175090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97615 (or 97612 counting only the distinct ones).

The product of its (nonzero) digits is 2593080, while the sum is 54.

The spelling of 77378175090 in words is "seventy-seven billion, three hundred seventy-eight million, one hundred seventy-five thousand, ninety".