77857830851010 has 48 divisors (see below), whose sum is σ = 217366352257536. Its totient is φ = 17796075622752.

The previous prime is 77857830850997. The next prime is 77857830851137. The reversal of 77857830851010 is 1015803875877.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26482253922 + ... + 26482256861.

It is an arithmetic number, because the mean of its divisors is an integer number (4528465672032).

Almost surely, 2^{77857830851010} is an apocalyptic number.

77857830851010 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

77857830851010 is an abundant number, since it is smaller than the sum of its proper divisors (139508521406526).

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

77857830851010 is a wasteful number, since it uses less digits than its factorization.

77857830851010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52964510807 (or 52964510800 counting only the distinct ones).

The product of its (nonzero) digits is 13171200, while the sum is 60.

The spelling of 77857830851010 in words is "seventy-seven trillion, eight hundred fifty-seven billion, eight hundred thirty million, eight hundred fifty-one thousand, ten".