81060273254400 has 1248 divisors, whose sum is σ = 295666229935872. Its totient is φ = 19431004569600.

The previous prime is 81060273254369. The next prime is 81060273254407. The reversal of 81060273254400 is 445237206018.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81060273254407) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 182980300579 + ... + 182980301021.

Almost surely, 2^{81060273254400} is an apocalyptic number.

81060273254400 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 81060273254400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147833114967936).

81060273254400 is an abundant number, since it is smaller than the sum of its proper divisors (214605956681472).

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

81060273254400 is a wasteful number, since it uses less digits than its factorization.

81060273254400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 977 (or 950 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 42.

The spelling of 81060273254400 in words is "eighty-one trillion, sixty billion, two hundred seventy-three million, two hundred fifty-four thousand, four hundred".