28361768266 has 24 divisors (see below), whose sum is σ = 47047068864. Its totient is φ = 12811528080.

The previous prime is 28361768263. The next prime is 28361768269. The reversal of 28361768266 is 66286716382.

It is an interprime number because it is at equal distance from previous prime (28361768263) and next prime (28361768269).

It is not an unprimeable number, because it can be changed into a prime (28361768263) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 876780 + ... + 908551.

It is an arithmetic number, because the mean of its divisors is an integer number (1960294536).

Almost surely, 2^28361768266 is an apocalyptic number.

28361768266 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

28361768266 is a deficient number, since it is larger than the sum of its proper divisors (18685300598).

28361768266 is a wasteful number, since it uses less digits than its factorization.

28361768266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1785406 (or 1785393 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 55.

The spelling of 28361768266 in words is "twenty-eight billion, three hundred sixty-one million, seven hundred sixty-eight thousand, two hundred sixty-six".