285739272722 has 6 divisors (see below), whose sum is σ = 428610043029. Its totient is φ = 142869258380.

The previous prime is 285739272677. The next prime is 285739272737. The reversal of 285739272722 is 227272937582.

It can be written as a sum of positive squares in 2 ways, for example, as 218575885441 + 67163387281 = 467521^2 + 259159^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=377981.

It is a super-3 number, since 3×285739272722³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 566972 + ... + 944952.

Almost surely, 2^285739272722 is an apocalyptic number.

285739272722 is a deficient number, since it is larger than the sum of its proper divisors (142870770307).

285739272722 is an frugal number, since it uses more digits than its factorization.

285739272722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 755964 (or 377983 counting only the distinct ones).

The product of its digits is 11854080, while the sum is 56.

The spelling of 285739272722 in words is "two hundred eighty-five billion, seven hundred thirty-nine million, two hundred seventy-two thousand, seven hundred twenty-two".