261451130273533 has 8 divisors (see below), whose sum is σ = 261672001804800. Its totient is φ = 261230313164688.

The previous prime is 261451130273521. The next prime is 261451130273609. The reversal of 261451130273533 is 335372031154162.

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 261451130273533 - 2³⁷ = 261313691320061 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 (261451130273933) 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, 3990466 + ... + 23212627.

It is an arithmetic number, because the mean of its divisors is an integer number (32709000225600).

Almost surely, 2^{261451130273533} is an apocalyptic number.

It is an amenable number.

261451130273533 is a deficient number, since it is larger than the sum of its proper divisors (220871531267).

261451130273533 is a wasteful number, since it uses less digits than its factorization.

261451130273533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27211211.

The product of its (nonzero) digits is 1360800, while the sum is 46.

The spelling of 261451130273533 in words is "two hundred sixty-one trillion, four hundred fifty-one billion, one hundred thirty million, two hundred seventy-three thousand, five hundred thirty-three".