1081672107840 has 1120 divisors, whose sum is σ = 4190886273024. Its totient is φ = 264025681920.

The previous prime is 1081672107793. The next prime is 1081672107851. The reversal of 1081672107840 is 487012761801.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 1977462447 + ... + 1977462993.

Almost surely, 2^{1081672107840} is an apocalyptic number.

1081672107840 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 1081672107840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2095443136512).

1081672107840 is an abundant number, since it is smaller than the sum of its proper divisors (3109214165184).

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

1081672107840 is a wasteful number, since it uses less digits than its factorization.

1081672107840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737 (or 718 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 45.

The spelling of 1081672107840 in words is "one trillion, eighty-one billion, six hundred seventy-two million, one hundred seven thousand, eight hundred forty".