81950110588 has 48 divisors (see below), whose sum is σ = 147213158400. Its totient is φ = 39906659520.

The previous prime is 81950110579. The next prime is 81950110621. The reversal of 81950110588 is 88501105918.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8075998 + ... + 8086138.

It is an arithmetic number, because the mean of its divisors is an integer number (3066940800).

Almost surely, 2^81950110588 is an apocalyptic number.

It is an amenable number.

81950110588 is a deficient number, since it is larger than the sum of its proper divisors (65263047812).

81950110588 is a wasteful number, since it uses less digits than its factorization.

81950110588 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10570 (or 10568 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 46.

The spelling of 81950110588 in words is "eighty-one billion, nine hundred fifty million, one hundred ten thousand, five hundred eighty-eight".