13473242731520 has 352 divisors, whose sum is σ = 39621276092160. Its totient is φ = 4325851791360.

The previous prime is 13473242731511. The next prime is 13473242731549. The reversal of 13473242731520 is 2513724237431.

It is a tau number, because it is divible by the number of its divisors (352).

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16439636 + ... + 17239724.

Almost surely, 2^{13473242731520} is an apocalyptic number.

13473242731520 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 13473242731520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19810638046080).

13473242731520 is an abundant number, since it is smaller than the sum of its proper divisors (26148033360640).

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

13473242731520 is a wasteful number, since it uses less digits than its factorization.

13473242731520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800161 (or 800143 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 44.

Adding to 13473242731520 its reverse (2513724237431), we get a palindrome (15986966968951).

The spelling of 13473242731520 in words is "thirteen trillion, four hundred seventy-three billion, two hundred forty-two million, seven hundred thirty-one thousand, five hundred twenty".