13520551565400 has 192 divisors, whose sum is σ = 45784465678080. Its totient is φ = 3273378393600.

The previous prime is 13520551565387. The next prime is 13520551565447. The reversal of 13520551565400 is 456515502531.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3643117 + ... + 6349283.

It is an arithmetic number, because the mean of its divisors is an integer number (238460758740).

Almost surely, 2^{13520551565400} is an apocalyptic number.

13520551565400 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 13520551565400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22892232839040).

13520551565400 is an abundant number, since it is smaller than the sum of its proper divisors (32263914112680).

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

13520551565400 is a wasteful number, since it uses less digits than its factorization.

13520551565400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2706954 (or 2706945 counting only the distinct ones).

The product of its (nonzero) digits is 450000, while the sum is 42.

The spelling of 13520551565400 in words is "thirteen trillion, five hundred twenty billion, five hundred fifty-one million, five hundred sixty-five thousand, four hundred".