1321857852610 has 32 divisors (see below), whose sum is σ = 2391457708800. Its totient is φ = 526058064000.

The previous prime is 1321857852587. The next prime is 1321857852619. The reversal of 1321857852610 is 162587581231.

It is not an unprimeable number, because it can be changed into a prime (1321857852619) 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 15 ways as a sum of consecutive naturals, for example, 1123735 + ... + 1976485.

It is an arithmetic number, because the mean of its divisors is an integer number (74733053400).

Almost surely, 2^{1321857852610} is an apocalyptic number.

1321857852610 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1321857852610 is a deficient number, since it is larger than the sum of its proper divisors (1069599856190).

1321857852610 is a wasteful number, since it uses less digits than its factorization.

1321857852610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853546.

The product of its (nonzero) digits is 806400, while the sum is 49.

The spelling of 1321857852610 in words is "one trillion, three hundred twenty-one billion, eight hundred fifty-seven million, eight hundred fifty-two thousand, six hundred ten".