87761594929 has 2 divisors, whose sum is σ = 87761594930. Its totient is φ = 87761594928.

The previous prime is 87761594867. The next prime is 87761594933. The reversal of 87761594929 is 92949516778.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72864904225 + 14896690704 = 269935^2 + 122052^2 .

It is a cyclic number.

It is not a de Polignac number, because 87761594929 - 2¹⁷ = 87761463857 is a prime.

It is not a weakly prime, because it can be changed into another prime (87761594939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43880797464 + 43880797465.

It is an arithmetic number, because the mean of its divisors is an integer number (43880797465).

Almost surely, 2^87761594929 is an apocalyptic number.

It is an amenable number.

87761594929 is a deficient number, since it is larger than the sum of its proper divisors (1).

87761594929 is an equidigital number, since it uses as much as digits as its factorization.

87761594929 is an evil number, because the sum of its binary digits is even.

The product of its digits is 68584320, while the sum is 67.

The spelling of 87761594929 in words is "eighty-seven billion, seven hundred sixty-one million, five hundred ninety-four thousand, nine hundred twenty-nine".