261012424252 has 24 divisors (see below), whose sum is σ = 462716150400. Its totient is φ = 128812966656.

The previous prime is 261012424241. The next prime is 261012424291. The reversal of 261012424252 is 252424210162.

261012424252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×261012424252² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 441708 + ... + 846835.

It is an arithmetic number, because the mean of its divisors is an integer number (19279839600).

Almost surely, 2^261012424252 is an apocalyptic number.

It is an amenable number.

261012424252 is a deficient number, since it is larger than the sum of its proper divisors (201703726148).

261012424252 is a wasteful number, since it uses less digits than its factorization.

261012424252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1289205 (or 1289203 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 31.

The spelling of 261012424252 in words is "two hundred sixty-one billion, twelve million, four hundred twenty-four thousand, two hundred fifty-two".