261451052732006 has 8 divisors (see below), whose sum is σ = 415245789633240. Its totient is φ = 123035789520928.

The previous prime is 261451052731993. The next prime is 261451052732011. The reversal of 261451052732006 is 600237250154162.

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

It is a congruent number.

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, 3844868422496 + ... + 3844868422563.

It is an arithmetic number, because the mean of its divisors is an integer number (51905723704155).

Almost surely, 2^{261451052732006} is an apocalyptic number.

261451052732006 is a deficient number, since it is larger than the sum of its proper divisors (153794736901234).

261451052732006 is a wasteful number, since it uses less digits than its factorization.

261451052732006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7689736845078.

The product of its (nonzero) digits is 604800, while the sum is 44.

The spelling of 261451052732006 in words is "two hundred sixty-one trillion, four hundred fifty-one billion, fifty-two million, seven hundred thirty-two thousand, six".