261542546204 has 12 divisors (see below), whose sum is σ = 457786889784. Its totient is φ = 130746291984.

The previous prime is 261542546159. The next prime is 261542546207. The reversal of 261542546204 is 402645245162.

261542546204 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261542546207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6221714 + ... + 6263609.

It is an arithmetic number, because the mean of its divisors is an integer number (38148907482).

Almost surely, 2^261542546204 is an apocalyptic number.

It is an amenable number.

261542546204 is a deficient number, since it is larger than the sum of its proper divisors (196244343580).

261542546204 is a wasteful number, since it uses less digits than its factorization.

261542546204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12490564 (or 12490562 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 41.

The spelling of 261542546204 in words is "two hundred sixty-one billion, five hundred forty-two million, five hundred forty-six thousand, two hundred four".