1081872080640 has 432 divisors, whose sum is σ = 4180416091488. Its totient is φ = 266305978368.

The previous prime is 1081872080593. The next prime is 1081872080671. The reversal of 1081872080640 is 460802781801.

It is a tau number, because it is divible by the number of its divisors (432).

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 47 ways as a sum of consecutive naturals, for example, 3909742 + ... + 4177298.

Almost surely, 2^{1081872080640} is an apocalyptic number.

1081872080640 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 1081872080640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2090208045744).

1081872080640 is an abundant number, since it is smaller than the sum of its proper divisors (3098544010848).

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

1081872080640 is an equidigital number, since it uses as much as digits as its factorization.

1081872080640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267606 (or 267580 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 45.

The spelling of 1081872080640 in words is "one trillion, eighty-one billion, eight hundred seventy-two million, eighty thousand, six hundred forty".