285605626890 has 16 divisors (see below), whose sum is σ = 685453504608. Its totient is φ = 76161500496.

The previous prime is 285605626841. The next prime is 285605626903. The reversal of 285605626890 is 98626506582.

It is a super-2 number, since 2×285605626890² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 285605626890.

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, 4760093752 + ... + 4760093811.

It is an arithmetic number, because the mean of its divisors is an integer number (42840844038).

Almost surely, 2^285605626890 is an apocalyptic number.

285605626890 is an abundant number, since it is smaller than the sum of its proper divisors (399847877718).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

285605626890 is a wasteful number, since it uses less digits than its factorization.

285605626890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9520187573.

The product of its (nonzero) digits is 12441600, while the sum is 57.

The spelling of 285605626890 in words is "two hundred eighty-five billion, six hundred five million, six hundred twenty-six thousand, eight hundred ninety".