857922623380 has 24 divisors (see below), whose sum is σ = 1802026239048. Its totient is φ = 343095005568.

The previous prime is 857922623351. The next prime is 857922623429. The reversal of 857922623380 is 83326229758.

It can be written as a sum of positive squares in 4 ways, for example, as 2959795216 + 854962828164 = 54404^2 + 924642^2 .

It is a congruent number.

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, 4532679 + ... + 4718158.

It is an arithmetic number, because the mean of its divisors is an integer number (75084426627).

Almost surely, 2^857922623380 is an apocalyptic number.

It is an amenable number.

857922623380 is an abundant number, since it is smaller than the sum of its proper divisors (944103615668).

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

857922623380 is a wasteful number, since it uses less digits than its factorization.

857922623380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9255483 (or 9255481 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 55.

The spelling of 857922623380 in words is "eight hundred fifty-seven billion, nine hundred twenty-two million, six hundred twenty-three thousand, three hundred eighty".