244635721401 has 16 divisors (see below), whose sum is σ = 345387253824. Its totient is φ = 153488400384.

The previous prime is 244635721391. The next prime is 244635721549. The reversal of 244635721401 is 104127536442.

It is not a de Polignac number, because 244635721401 - 2⁷ = 244635721273 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 244635721401.

It is not an unprimeable number, because it can be changed into a prime (244635721801) 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, 867321 + ... + 1114233.

It is an arithmetic number, because the mean of its divisors is an integer number (21586703364).

Almost surely, 2^244635721401 is an apocalyptic number.

It is an amenable number.

244635721401 is a deficient number, since it is larger than the sum of its proper divisors (100751532423).

244635721401 is a wasteful number, since it uses less digits than its factorization.

244635721401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266360.

The product of its (nonzero) digits is 161280, while the sum is 39.

The spelling of 244635721401 in words is "two hundred forty-four billion, six hundred thirty-five million, seven hundred twenty-one thousand, four hundred one".