9020761561 has 8 divisors (see below), whose sum is σ = 10915879680. Its totient is φ = 7277252928.

The previous prime is 9020761549. The next prime is 9020761573. The reversal of 9020761561 is 1651670209.

It is an interprime number because it is at equal distance from previous prime (9020761549) and next prime (9020761573).

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

It is a cyclic number.

It is not a de Polignac number, because 9020761561 - 2¹¹ = 9020759513 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9020761561.

It is not an unprimeable number, because it can be changed into a prime (9020761501) 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, 37902241 + ... + 37902478.

It is an arithmetic number, because the mean of its divisors is an integer number (1364484960).

Almost surely, 2^9020761561 is an apocalyptic number.

It is an amenable number.

9020761561 is a deficient number, since it is larger than the sum of its proper divisors (1895118119).

9020761561 is a wasteful number, since it uses less digits than its factorization.

9020761561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75804743.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 9020761561 is about 94977.6898066067. The cubic root of 9020761561 is about 2081.6820683149.

The spelling of 9020761561 in words is "nine billion, twenty million, seven hundred sixty-one thousand, five hundred sixty-one".