10001577220 has 24 divisors (see below), whose sum is σ = 21008804544. Its totient is φ = 3999584736.

The previous prime is 10001577199. The next prime is 10001577247. The reversal of 10001577220 is 2277510001.

It is a happy 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, 15447 + ... + 142273.

It is an arithmetic number, because the mean of its divisors is an integer number (875366856).

Almost surely, 2^10001577220 is an apocalyptic number.

10001577220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10001577220 is an abundant number, since it is smaller than the sum of its proper divisors (11007227324).

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

10001577220 is a wasteful number, since it uses less digits than its factorization.

10001577220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130779 (or 130777 counting only the distinct ones).

The product of its (nonzero) digits is 980, while the sum is 25.

The spelling of 10001577220 in words is "ten billion, one million, five hundred seventy-seven thousand, two hundred twenty".