261472766002501 has 8 divisors (see below), whose sum is σ = 262007118163800. Its totient is φ = 260938494835200.

The previous prime is 261472766002447. The next prime is 261472766002517. The reversal of 261472766002501 is 105200667274162.

It can be written as a sum of positive squares in 4 ways, for example, as 422501300001 + 261050264702500 = 650001^2 + 16157050^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 261472766002501 - 2¹⁵ = 261472765969733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261472766005501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13783200 + ... + 26700601.

It is an arithmetic number, because the mean of its divisors is an integer number (32750889770475).

Almost surely, 2^{261472766002501} is an apocalyptic number.

It is an amenable number.

261472766002501 is a deficient number, since it is larger than the sum of its proper divisors (534352161299).

261472766002501 is a wasteful number, since it uses less digits than its factorization.

261472766002501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40496999.

The product of its (nonzero) digits is 1693440, while the sum is 49.

The spelling of 261472766002501 in words is "two hundred sixty-one trillion, four hundred seventy-two billion, seven hundred sixty-six million, two thousand, five hundred one".