261245693246 has 8 divisors (see below), whose sum is σ = 408906302544. Its totient is φ = 124943592400.

The previous prime is 261245693243. The next prime is 261245693311. The reversal of 261245693246 is 642396542162.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 261245693194 and 261245693203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261245693243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2839627055 + ... + 2839627146.

It is an arithmetic number, because the mean of its divisors is an integer number (51113287818).

Almost surely, 2^261245693246 is an apocalyptic number.

261245693246 is a deficient number, since it is larger than the sum of its proper divisors (147660609298).

261245693246 is a wasteful number, since it uses less digits than its factorization.

261245693246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5679254226.

The product of its digits is 3732480, while the sum is 50.

The spelling of 261245693246 in words is "two hundred sixty-one billion, two hundred forty-five million, six hundred ninety-three thousand, two hundred forty-six".