45081067720 has 96 divisors (see below), whose sum is σ = 109936261800. Its totient is φ = 16629989376.

The previous prime is 45081067673. The next prime is 45081067777. The reversal of 45081067720 is 2776018054.

It can be written as a sum of positive squares in 12 ways, for example, as 13545700996 + 31535366724 = 116386^2 + 177582^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9522474 + ... + 9527206.

Almost surely, 2^45081067720 is an apocalyptic number.

45081067720 is a gapful number since it is divisible by the number (40) 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 45081067720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54968130900).

45081067720 is an abundant number, since it is smaller than the sum of its proper divisors (64855194080).

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

45081067720 is a wasteful number, since it uses less digits than its factorization.

45081067720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6179 (or 6162 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 40.

The spelling of 45081067720 in words is "forty-five billion, eighty-one million, sixty-seven thousand, seven hundred twenty".