1081513375488 has 1152 divisors, whose sum is σ = 4105869465600. Its totient is φ = 273118003200.

The previous prime is 1081513375441. The next prime is 1081513375489. The reversal of 1081513375488 is 8845733151801.

1081513375488 is a `hidden beast` number, since 1 + 0 + 8 + 151 + 3 + 3 + 7 + 5 + 488 = 666.

It is a tau number, because it is divible by the number of its divisors (1152).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081513375489) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3848801908 + ... + 3848802188.

It is an arithmetic number, because the mean of its divisors is an integer number (3564122800).

Almost surely, 2^{1081513375488} is an apocalyptic number.

1081513375488 is a gapful number since it is divisible by the number (18) 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 1081513375488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2052934732800).

1081513375488 is an abundant number, since it is smaller than the sum of its proper divisors (3024356090112).

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

1081513375488 is a wasteful number, since it uses less digits than its factorization.

1081513375488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566 (or 546 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 54.

The spelling of 1081513375488 in words is "one trillion, eighty-one billion, five hundred thirteen million, three hundred seventy-five thousand, four hundred eighty-eight".