244155405213 has 24 divisors (see below), whose sum is σ = 359730140640. Its totient is φ = 159527918880.

The previous prime is 244155405113. The next prime is 244155405233. The reversal of 244155405213 is 312504551442.

244155405213 is a `hidden beast` number, since 2 + 4 + 41 + 55 + 40 + 521 + 3 = 666.

It is not a de Polignac number, because 244155405213 - 2¹² = 244155401117 is a prime.

It is a super-2 number, since 2×244155405213² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (244155405233) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 518806 + ... + 870327.

It is an arithmetic number, because the mean of its divisors is an integer number (14988755860).

Almost surely, 2^244155405213 is an apocalyptic number.

It is an amenable number.

244155405213 is a deficient number, since it is larger than the sum of its proper divisors (115574735427).

244155405213 is a wasteful number, since it uses less digits than its factorization.

244155405213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1389529 (or 1389526 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

Adding to 244155405213 its reverse (312504551442), we get a palindrome (556659956655).

The spelling of 244155405213 in words is "two hundred forty-four billion, one hundred fifty-five million, four hundred five thousand, two hundred thirteen".