13263770520 has 512 divisors, whose sum is σ = 59367168000. Its totient is φ = 2543892480.

The previous prime is 13263770483. The next prime is 13263770537. The reversal of 13263770520 is 2507736231.

13263770520 is a `hidden beast` number, since 1 + 3 + 2 + 63 + 7 + 70 + 520 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1074946 + ... + 1087214.

It is an arithmetic number, because the mean of its divisors is an integer number (115951500).

Almost surely, 2^13263770520 is an apocalyptic number.

13263770520 is a gapful number since it is divisible by the number (10) 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 13263770520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29683584000).

13263770520 is an abundant number, since it is smaller than the sum of its proper divisors (46103397480).

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

13263770520 is a wasteful number, since it uses less digits than its factorization.

13263770520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12320 (or 12310 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 36.

The spelling of 13263770520 in words is "thirteen billion, two hundred sixty-three million, seven hundred seventy thousand, five hundred twenty".