10187195220 has 54 divisors (see below), whose sum is σ = 30905266938. Its totient is φ = 2716224288.

The previous prime is 10187195201. The next prime is 10187195267. The reversal of 10187195220 is 2259178101.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 8149756176 + 2037439044 = 90276^2 + 45138^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1350379 + ... + 1357901.

Almost surely, 2^10187195220 is an apocalyptic number.

10187195220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10187195220 is an abundant number, since it is smaller than the sum of its proper divisors (20718071718).

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

10187195220 is an frugal number, since it uses more digits than its factorization.

10187195220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15061 (or 7533 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 36.

The spelling of 10187195220 in words is "ten billion, one hundred eighty-seven million, one hundred ninety-five thousand, two hundred twenty".