1881705047040 has 1408 divisors, whose sum is σ = 8317551191040. Its totient is φ = 392822784000.

The previous prime is 1881705046967. The next prime is 1881705047177. The reversal of 1881705047040 is 407405071881.

1881705047040 is a `hidden beast` number, since 1 + 8 + 8 + 1 + 70 + 504 + 70 + 4 + 0 = 666.

It is a super-2 number, since 2×1881705047040² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1270563100 + ... + 1270564580.

Almost surely, 2^{1881705047040} is an apocalyptic number.

1881705047040 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 1881705047040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4158775595520).

1881705047040 is an abundant number, since it is smaller than the sum of its proper divisors (6435846144000).

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

1881705047040 is a wasteful number, since it uses less digits than its factorization.

1881705047040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1636 (or 1612 counting only the distinct ones).

The product of its (nonzero) digits is 250880, while the sum is 45.

The spelling of 1881705047040 in words is "one trillion, eight hundred eighty-one billion, seven hundred five million, forty-seven thousand, forty".