84267769261 has 8 divisors (see below), whose sum is σ = 90753483800. Its totient is φ = 77782565952.

The previous prime is 84267769259. The next prime is 84267769291. The reversal of 84267769261 is 16296776248.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3387822025 + 80879947236 = 58205^2 + 284394^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 84267769261 - 2¹ = 84267769259 is a prime.

It is a super-2 number, since 2×84267769261² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 84267769196 and 84267769205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84267769211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 257611 + ... + 484663.

It is an arithmetic number, because the mean of its divisors is an integer number (11344185475).

Almost surely, 2^84267769261 is an apocalyptic number.

It is an amenable number.

84267769261 is a deficient number, since it is larger than the sum of its proper divisors (6485714539).

84267769261 is a wasteful number, since it uses less digits than its factorization.

84267769261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255615.

The product of its digits is 12192768, while the sum is 58.

The spelling of 84267769261 in words is "eighty-four billion, two hundred sixty-seven million, seven hundred sixty-nine thousand, two hundred sixty-one".