1301528871820 has 48 divisors (see below), whose sum is σ = 2750056243200. Its totient is φ = 517410668736.

The previous prime is 1301528871809. The next prime is 1301528871821. The reversal of 1301528871820 is 281788251031.

It is a super-2 number, since 2×1301528871820² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1301528871821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2427949 + ... + 2915131.

It is an arithmetic number, because the mean of its divisors is an integer number (57292838400).

Almost surely, 2^{1301528871820} is an apocalyptic number.

1301528871820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1301528871820 is an abundant number, since it is smaller than the sum of its proper divisors (1448527371380).

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

1301528871820 is a wasteful number, since it uses less digits than its factorization.

1301528871820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488014 (or 488012 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 46.

The spelling of 1301528871820 in words is "one trillion, three hundred one billion, five hundred twenty-eight million, eight hundred seventy-one thousand, eight hundred twenty".