10243644364261 has 32 divisors (see below), whose sum is σ = 13213175673600. Its totient is φ = 7705948346880.

The previous prime is 10243644364259. The next prime is 10243644364307. The reversal of 10243644364261 is 16246344634201.

It is not a de Polignac number, because 10243644364261 - 2¹ = 10243644364259 is a prime.

It is a super-2 number, since 2×10243644364261² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10243644364201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19907721 + ... + 20415793.

It is an arithmetic number, because the mean of its divisors is an integer number (412911739800).

Almost surely, 2^{10243644364261} is an apocalyptic number.

10243644364261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10243644364261 is a deficient number, since it is larger than the sum of its proper divisors (2969531309339).

10243644364261 is a wasteful number, since it uses less digits than its factorization.

10243644364261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517149.

The product of its (nonzero) digits is 1990656, while the sum is 46.

Adding to 10243644364261 its reverse (16246344634201), we get a palindrome (26489988998462).

The spelling of 10243644364261 in words is "ten trillion, two hundred forty-three billion, six hundred forty-four million, three hundred sixty-four thousand, two hundred sixty-one".