81411740036 has 24 divisors (see below), whose sum is σ = 159213206880. Its totient is φ = 36102766400.

The previous prime is 81411740023. The next prime is 81411740057. The reversal of 81411740036 is 63004711418.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 81411739978 and 81411740005.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22562426 + ... + 22566033.

It is an arithmetic number, because the mean of its divisors is an integer number (6633883620).

Almost surely, 2^81411740036 is an apocalyptic number.

It is an amenable number.

81411740036 is a deficient number, since it is larger than the sum of its proper divisors (77801466844).

81411740036 is a wasteful number, since it uses less digits than its factorization.

81411740036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45128515 (or 45128513 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The spelling of 81411740036 in words is "eighty-one billion, four hundred eleven million, seven hundred forty thousand, thirty-six".