10121581808 has 40 divisors (see below), whose sum is σ = 22230608400. Its totient is φ = 4425629184.

The previous prime is 10121581753. The next prime is 10121581817. The reversal of 10121581808 is 80818512101.

It is a congruent number.

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, 1276613 + ... + 1284516.

It is an arithmetic number, because the mean of its divisors is an integer number (555765210).

Almost surely, 2^10121581808 is an apocalyptic number.

It is an amenable number.

10121581808 is an abundant number, since it is smaller than the sum of its proper divisors (12109026592).

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

10121581808 is a wasteful number, since it uses less digits than its factorization.

10121581808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2561169 (or 2561163 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 35.

The spelling of 10121581808 in words is "ten billion, one hundred twenty-one million, five hundred eighty-one thousand, eight hundred eight".