857772835378 has 16 divisors (see below), whose sum is σ = 1296838692864. Its totient is φ = 425493522720.

The previous prime is 857772835363. The next prime is 857772835397. The reversal of 857772835378 is 873538277758.

It is a super-2 number, since 2×857772835378² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9842551 + ... + 9929317.

It is an arithmetic number, because the mean of its divisors is an integer number (81052418304).

Almost surely, 2^857772835378 is an apocalyptic number.

857772835378 is a deficient number, since it is larger than the sum of its proper divisors (439065857486).

857772835378 is a wasteful number, since it uses less digits than its factorization.

857772835378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125817.

The product of its digits is 553190400, while the sum is 70.

The spelling of 857772835378 in words is "eight hundred fifty-seven billion, seven hundred seventy-two million, eight hundred thirty-five thousand, three hundred seventy-eight".