244149780921 has 16 divisors (see below), whose sum is σ = 326972295936. Its totient is φ = 162047074176.

The previous prime is 244149780881. The next prime is 244149780983. The reversal of 244149780921 is 129087941442.

It is not a de Polignac number, because 244149780921 - 2²² = 244145586617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (244149580921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6953616 + ... + 6988638.

It is an arithmetic number, because the mean of its divisors is an integer number (20435768496).

Almost surely, 2^244149780921 is an apocalyptic number.

It is an amenable number.

244149780921 is a deficient number, since it is larger than the sum of its proper divisors (82822515015).

244149780921 is a wasteful number, since it uses less digits than its factorization.

244149780921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45232.

The product of its (nonzero) digits is 1161216, while the sum is 51.

The spelling of 244149780921 in words is "two hundred forty-four billion, one hundred forty-nine million, seven hundred eighty thousand, nine hundred twenty-one".