2088783561 has 16 divisors (see below), whose sum is σ = 2824416000.
Its totient is φ = 1372906320.
The previous prime is 2088783559. The next prime is 2088783589. The reversal of 2088783561 is 1653878802.
It is not a de Polignac number, because 2088783561 - 21 = 2088783559 is a prime.
It is a self number, because there is not a number n which added to its sum of digits gives 2088783561.
It is not an unprimeable number, because it can be changed into a prime (2088783161) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115846 + ... + 132656.
It is an arithmetic number, because the mean of its divisors is an integer number (176526000).
Almost surely, 22088783561 is an apocalyptic number.
It is an amenable number.
2088783561 is a deficient number, since it is larger than the sum of its proper divisors (735632439).
2088783561 is a wasteful number, since it uses less digits than its factorization.
2088783561 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 17396.
The product of its (nonzero) digits is 645120, while the sum is 48.
The square root of 2088783561 is about 45703.2117142767.
The cubic root of 2088783561 is about 1278.2951670668.
The spelling of 2088783561 in words is "two billion, eighty-eight million, seven hundred eighty-three thousand, five hundred sixty-one".