81480061400 has 24 divisors (see below), whose sum is σ = 189441143220. Its totient is φ = 32592024480.

The previous prime is 81480061367. The next prime is 81480061417. The reversal of 81480061400 is 416008418.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 203699954 + ... + 203700353.

Almost surely, 2^81480061400 is an apocalyptic number.

It is an amenable number.

81480061400 is an abundant number, since it is smaller than the sum of its proper divisors (107961081820).

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

81480061400 is a wasteful number, since it uses less digits than its factorization.

81480061400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407400323 (or 407400314 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 32.

Adding to 81480061400 its reverse (416008418), we get a palindrome (81896069818).

The spelling of 81480061400 in words is "eighty-one billion, four hundred eighty million, sixty-one thousand, four hundred".