261552377175755 has 8 divisors (see below), whose sum is σ = 332325373352832. Its totient is φ = 196933554579328.

The previous prime is 261552377175731. The next prime is 261552377175779. The reversal of 261552377175755 is 557571773255162.

It is a happy number.

261552377175755 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (261552377175731) and next prime (261552377175779).

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 261552377175755 - 2²² = 261552372981451 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1538543395067 + ... + 1538543395236.

It is an arithmetic number, because the mean of its divisors is an integer number (41540671669104).

Almost surely, 2^{261552377175755} is an apocalyptic number.

261552377175755 is a deficient number, since it is larger than the sum of its proper divisors (70772996177077).

261552377175755 is a wasteful number, since it uses less digits than its factorization.

261552377175755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3077086790325.

The product of its digits is 540225000, while the sum is 68.

The spelling of 261552377175755 in words is "two hundred sixty-one trillion, five hundred fifty-two billion, three hundred seventy-seven million, one hundred seventy-five thousand, seven hundred fifty-five".