1020045132520 has 16 divisors (see below), whose sum is σ = 2295101548260. Its totient is φ = 408018052992.

The previous prime is 1020045132451. The next prime is 1020045132541. The reversal of 1020045132520 is 252315400201.

It can be written as a sum of positive squares in 2 ways, for example, as 1010374770276 + 9670362244 = 1005174^2 + 98338^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12750564117 + ... + 12750564196.

Almost surely, 2^{1020045132520} is an apocalyptic number.

1020045132520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020045132520 is an abundant number, since it is smaller than the sum of its proper divisors (1275056415740).

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

1020045132520 is a wasteful number, since it uses less digits than its factorization.

1020045132520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25501128324 (or 25501128320 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The spelling of 1020045132520 in words is "one trillion, twenty billion, forty-five million, one hundred thirty-two thousand, five hundred twenty".