94977000581 has 2 divisors, whose sum is σ = 94977000582. Its totient is φ = 94977000580.

The previous prime is 94977000577. The next prime is 94977000617. The reversal of 94977000581 is 18500077949.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66682732900 + 28294267681 = 258230^2 + 168209^2 .

It is a cyclic number.

It is not a de Polignac number, because 94977000581 - 2² = 94977000577 is a prime.

It is a super-2 number, since 2×94977000581² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (94977000551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47488500290 + 47488500291.

It is an arithmetic number, because the mean of its divisors is an integer number (47488500291).

Almost surely, 2^94977000581 is an apocalyptic number.

It is an amenable number.

94977000581 is a deficient number, since it is larger than the sum of its proper divisors (1).

94977000581 is an equidigital number, since it uses as much as digits as its factorization.

94977000581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 635040, while the sum is 50.

The spelling of 94977000581 in words is "ninety-four billion, nine hundred seventy-seven million, five hundred eighty-one", and thus it is an aban number.