3857212289280 has 1728 divisors, whose sum is σ = 15899795251200. Its totient is φ = 777550233600.

The previous prime is 3857212289269. The next prime is 3857212289321. The reversal of 3857212289280 is 829822127583.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a self number, because there is not a number n which added to its sum of digits gives 3857212289280.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 14233255545 + ... + 14233255815.

It is an arithmetic number, because the mean of its divisors is an integer number (9201270400).

Almost surely, 2^{3857212289280} is an apocalyptic number.

3857212289280 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3857212289280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7949897625600).

3857212289280 is an abundant number, since it is smaller than the sum of its proper divisors (12042582961920).

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

3857212289280 is a wasteful number, since it uses less digits than its factorization.

3857212289280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412 (or 367 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 57.

The spelling of 3857212289280 in words is "three trillion, eight hundred fifty-seven billion, two hundred twelve million, two hundred eighty-nine thousand, two hundred eighty".