857760080080 has 40 divisors (see below), whose sum is σ = 1994360011272. Its totient is φ = 343092363264.

The previous prime is 857760080069. The next prime is 857760080081. The reversal of 857760080080 is 80080067758.

It can be written as a sum of positive squares in 4 ways, for example, as 632220736 + 857127859344 = 25144^2 + 925812^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857760080081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2414364 + ... + 2746756.

Almost surely, 2^857760080080 is an apocalyptic number.

857760080080 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

857760080080 is an abundant number, since it is smaller than the sum of its proper divisors (1136599931192).

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

857760080080 is a wasteful number, since it uses less digits than its factorization.

857760080080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364663 (or 364657 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 49.

The spelling of 857760080080 in words is "eight hundred fifty-seven billion, seven hundred sixty million, eighty thousand, eighty".