81467473400 has 24 divisors (see below), whose sum is σ = 189411876120. Its totient is φ = 32586989280.

The previous prime is 81467473391. The next prime is 81467473429. The reversal of 81467473400 is 437476418.

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, 203668484 + ... + 203668883.

It is an arithmetic number, because the mean of its divisors is an integer number (7892161505).

Almost surely, 2^81467473400 is an apocalyptic number.

It is an amenable number.

81467473400 is an abundant number, since it is smaller than the sum of its proper divisors (107944402720).

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

81467473400 is a wasteful number, since it uses less digits than its factorization.

81467473400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407337383 (or 407337374 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 44.

The spelling of 81467473400 in words is "eighty-one billion, four hundred sixty-seven million, four hundred seventy-three thousand, four hundred".