81480033861120 has 480 divisors, whose sum is σ = 287520195815424. Its totient is φ = 21320364441600.

The previous prime is 81480033861119. The next prime is 81480033861137. The reversal of 81480033861120 is 2116833008418.

81480033861120 is a `hidden beast` number, since 8 + 1 + 4 + 8 + 0 + 0 + 3 + 3 + 8 + 611 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (480).

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 345044209 + ... + 345280271.

Almost surely, 2^{81480033861120} is an apocalyptic number.

81480033861120 is a gapful number since it is divisible by the number (80) 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 81480033861120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143760097907712).

81480033861120 is an abundant number, since it is smaller than the sum of its proper divisors (206040161954304).

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

81480033861120 is a wasteful number, since it uses less digits than its factorization.

81480033861120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236374 (or 236355 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

Adding to 81480033861120 its reverse (2116833008418), we get a palindrome (83596866869538).

The spelling of 81480033861120 in words is "eighty-one trillion, four hundred eighty billion, thirty-three million, eight hundred sixty-one thousand, one hundred twenty".