1906220412560 has 80 divisors (see below), whose sum is σ = 4505539668672. Its totient is φ = 749834841600.

The previous prime is 1906220412557. The next prime is 1906220412571. The reversal of 1906220412560 is 652140226091.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×1906220412560² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25470395 + ... + 25545125.

Almost surely, 2^{1906220412560} is an apocalyptic number.

1906220412560 is a gapful number since it is divisible by the number (10) 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 1906220412560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2252769834336).

1906220412560 is an abundant number, since it is smaller than the sum of its proper divisors (2599319256112).

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

1906220412560 is a wasteful number, since it uses less digits than its factorization.

1906220412560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80032 (or 80026 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The spelling of 1906220412560 in words is "one trillion, nine hundred six billion, two hundred twenty million, four hundred twelve thousand, five hundred sixty".