45130287520 has 96 divisors (see below), whose sum is σ = 109535826960. Its totient is φ = 17561026560.

The previous prime is 45130287497. The next prime is 45130287539. The reversal of 45130287520 is 2578203154.

It can be written as a sum of positive squares in 8 ways, for example, as 154057744 + 44976229776 = 12412^2 + 212076^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 45130287520.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2305936 + ... + 2325424.

Almost surely, 2^45130287520 is an apocalyptic number.

45130287520 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 45130287520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54767913480).

45130287520 is an abundant number, since it is smaller than the sum of its proper divisors (64405539440).

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

45130287520 is a wasteful number, since it uses less digits than its factorization.

45130287520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19898 (or 19890 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 37.

The spelling of 45130287520 in words is "forty-five billion, one hundred thirty million, two hundred eighty-seven thousand, five hundred twenty".