144927921636 has 81 divisors (see below), whose sum is σ = 372288157059. Its totient is φ = 47538021168.

The previous prime is 144927921581. The next prime is 144927921641. The reversal of 144927921636 is 636129729441.

The square root of 144927921636 is 380694.

It is a perfect power (a square), and thus also a powerful number.

144927921636 is a `hidden beast` number, since 1 + 4 + 492 + 7 + 92 + 1 + 63 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 153038515 + ... + 153039461.

Almost surely, 2^144927921636 is an apocalyptic number.

144927921636 is the 380694-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 144927921636

144927921636 is an abundant number, since it is smaller than the sum of its proper divisors (227360235423).

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

144927921636 is an frugal number, since it uses more digits than its factorization.

144927921636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2038 (or 1019 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 54.

The spelling of 144927921636 in words is "one hundred forty-four billion, nine hundred twenty-seven million, nine hundred twenty-one thousand, six hundred thirty-six".