81011415050 has 48 divisors (see below), whose sum is σ = 152661062400. Its totient is φ = 31979188800.

The previous prime is 81011415047. The next prime is 81011415083. The reversal of 81011415050 is 5051411018.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12158720 + ... + 12165380.

It is an arithmetic number, because the mean of its divisors is an integer number (3180438800).

Almost surely, 2^81011415050 is an apocalyptic number.

81011415050 is a deficient number, since it is larger than the sum of its proper divisors (71649647350).

81011415050 is a wasteful number, since it uses less digits than its factorization.

81011415050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9831 (or 9826 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 26.

Adding to 81011415050 its reverse (5051411018), we get a palindrome (86062826068).

The spelling of 81011415050 in words is "eighty-one billion, eleven million, four hundred fifteen thousand, fifty".