13561904763792 has 1440 divisors, whose sum is σ = 50977537228800. Its totient is φ = 3357668160000.

The previous prime is 13561904763739. The next prime is 13561904763817. The reversal of 13561904763792 is 29736740916531.

It is a happy number.

13561904763792 is a `hidden beast` number, since 1 + 3 + 5 + 6 + 1 + 90 + 476 + 3 + 79 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 13154126317 + ... + 13154127347.

It is an arithmetic number, because the mean of its divisors is an integer number (35401067520).

Almost surely, 2^{13561904763792} is an apocalyptic number.

13561904763792 is a gapful number since it is divisible by the number (12) 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 13561904763792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25488768614400).

13561904763792 is an abundant number, since it is smaller than the sum of its proper divisors (37415632465008).

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

13561904763792 is a wasteful number, since it uses less digits than its factorization.

13561904763792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1190 (or 1156 counting only the distinct ones).

The product of its (nonzero) digits is 51438240, while the sum is 63.

The spelling of 13561904763792 in words is "thirteen trillion, five hundred sixty-one billion, nine hundred four million, seven hundred sixty-three thousand, seven hundred ninety-two".