16240645250261 has 16 divisors (see below), whose sum is σ = 16814198600640. Its totient is φ = 15667996350720.

The previous prime is 16240645250149. The next prime is 16240645250273. The reversal of 16240645250261 is 16205254604261.

16240645250261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 16240645250261 - 2¹⁰ = 16240645249237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16240645250461) 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, 628470701 + ... + 628496541.

It is an arithmetic number, because the mean of its divisors is an integer number (1050887412540).

Almost surely, 2^{16240645250261} is an apocalyptic number.

It is an amenable number.

16240645250261 is a deficient number, since it is larger than the sum of its proper divisors (573553350379).

16240645250261 is a wasteful number, since it uses less digits than its factorization.

16240645250261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42484.

The product of its (nonzero) digits is 691200, while the sum is 44.

The spelling of 16240645250261 in words is "sixteen trillion, two hundred forty billion, six hundred forty-five million, two hundred fifty thousand, two hundred sixty-one".