87474184933 has 2 divisors, whose sum is σ = 87474184934. Its totient is φ = 87474184932.

The previous prime is 87474184927. The next prime is 87474184951. The reversal of 87474184933 is 33948147478.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87153667524 + 320517409 = 295218^2 + 17903^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87474184933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87474104933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43737092466 + 43737092467.

It is an arithmetic number, because the mean of its divisors is an integer number (43737092467).

Almost surely, 2^87474184933 is an apocalyptic number.

It is an amenable number.

87474184933 is a deficient number, since it is larger than the sum of its proper divisors (1).

87474184933 is an equidigital number, since it uses as much as digits as its factorization.

87474184933 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16257024, while the sum is 58.

The spelling of 87474184933 in words is "eighty-seven billion, four hundred seventy-four million, one hundred eighty-four thousand, nine hundred thirty-three".