261452026153 has 4 divisors (see below), whose sum is σ = 261456742800. Its totient is φ = 261447309508.

The previous prime is 261452026127. The next prime is 261452026159. The reversal of 261452026153 is 351620254162.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-261452026153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (261452026159) 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, 2274175 + ... + 2386372.

It is an arithmetic number, because the mean of its divisors is an integer number (65364185700).

Almost surely, 2^261452026153 is an apocalyptic number.

It is an amenable number.

261452026153 is a deficient number, since it is larger than the sum of its proper divisors (4716647).

261452026153 is an equidigital number, since it uses as much as digits as its factorization.

261452026153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4716646.

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 261452026153 in words is "two hundred sixty-one billion, four hundred fifty-two million, twenty-six thousand, one hundred fifty-three".