1013551320520 has 64 divisors (see below), whose sum is σ = 2295859723200. Its totient is φ = 402693415680.

The previous prime is 1013551320451. The next prime is 1013551320539. The reversal of 1013551320520 is 250231553101.

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, 6198615 + ... + 6360025.

It is an arithmetic number, because the mean of its divisors is an integer number (35872808175).

Almost surely, 2^{1013551320520} is an apocalyptic number.

1013551320520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1013551320520 is an abundant number, since it is smaller than the sum of its proper divisors (1282308402680).

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

1013551320520 is a wasteful number, since it uses less digits than its factorization.

1013551320520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162478 (or 162474 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 28.

Adding to 1013551320520 its reverse (250231553101), we get a palindrome (1263782873621).

The spelling of 1013551320520 in words is "one trillion, thirteen billion, five hundred fifty-one million, three hundred twenty thousand, five hundred twenty".