261267714473 has 4 divisors (see below), whose sum is σ = 265695980880. Its totient is φ = 256839448068.

The previous prime is 261267714443. The next prime is 261267714503. The reversal of 261267714473 is 374417762162.

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 an interprime number because it is at equal distance from previous prime (261267714443) and next prime (261267714503).

It is a cyclic number.

It is not a de Polignac number, because 261267714473 - 2²⁰ = 261266665897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (261267714443) 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, 2214133115 + ... + 2214133232.

It is an arithmetic number, because the mean of its divisors is an integer number (66423995220).

Almost surely, 2^261267714473 is an apocalyptic number.

It is an amenable number.

261267714473 is a deficient number, since it is larger than the sum of its proper divisors (4428266407).

261267714473 is an equidigital number, since it uses as much as digits as its factorization.

261267714473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4428266406.

The product of its digits is 2370816, while the sum is 50.

The spelling of 261267714473 in words is "two hundred sixty-one billion, two hundred sixty-seven million, seven hundred fourteen thousand, four hundred seventy-three".