261453266546 has 8 divisors (see below), whose sum is σ = 394370849520. Its totient is φ = 129996316708.

The previous prime is 261453266539. The next prime is 261453266561. The reversal of 261453266546 is 645662354162.

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 = 261453266494 and 261453266503.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 365157836 + ... + 365158551.

It is an arithmetic number, because the mean of its divisors is an integer number (49296356190).

Almost surely, 2^261453266546 is an apocalyptic number.

261453266546 is a deficient number, since it is larger than the sum of its proper divisors (132917582974).

261453266546 is a wasteful number, since it uses less digits than its factorization.

261453266546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 730316568.

The product of its digits is 6220800, while the sum is 50.

The spelling of 261453266546 in words is "two hundred sixty-one billion, four hundred fifty-three million, two hundred sixty-six thousand, five hundred forty-six".