261432014245506 has 160 divisors (see below), whose sum is σ = 662484796098048. Its totient is φ = 76453115207040.

The previous prime is 261432014245471. The next prime is 261432014245537. The reversal of 261432014245506 is 605542410234162.

It is a happy number.

261432014245506 is a `hidden beast` number, since 2 + 6 + 1 + 43 + 20 + 1 + 42 + 45 + 506 = 666.

261432014245506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 9583930 + ... + 24793461.

Almost surely, 2^{261432014245506} is an apocalyptic number.

261432014245506 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

261432014245506 is an abundant number, since it is smaller than the sum of its proper divisors (401052781852542).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

261432014245506 is a wasteful number, since it uses less digits than its factorization.

261432014245506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34377598 (or 34377589 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 45.

Adding to 261432014245506 its reverse (605542410234162), we get a palindrome (866974424479668).

The spelling of 261432014245506 in words is "two hundred sixty-one trillion, four hundred thirty-two billion, fourteen million, two hundred forty-five thousand, five hundred six".