827910081261 has 8 divisors (see below), whose sum is σ = 1226533453760. Its totient is φ = 551940054156.

The previous prime is 827910081253. The next prime is 827910081287. The reversal of 827910081261 is 162180019728.

It is not a de Polignac number, because 827910081261 - 2³ = 827910081253 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 (827910088261) 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, 15331668145 + ... + 15331668198.

It is an arithmetic number, because the mean of its divisors is an integer number (153316681720).

Almost surely, 2^827910081261 is an apocalyptic number.

It is an amenable number.

827910081261 is a deficient number, since it is larger than the sum of its proper divisors (398623372499).

827910081261 is a wasteful number, since it uses less digits than its factorization.

827910081261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30663336352 (or 30663336346 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 45.

The spelling of 827910081261 in words is "eight hundred twenty-seven billion, nine hundred ten million, eighty-one thousand, two hundred sixty-one".