87023377849 has 2 divisors, whose sum is σ = 87023377850. Its totient is φ = 87023377848.

The previous prime is 87023377843. The next prime is 87023377901. The reversal of 87023377849 is 94877332078.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52402077225 + 34621300624 = 228915^2 + 186068^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87023377849 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87023377793 and 87023377802.

It is not a weakly prime, because it can be changed into another prime (87023377843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43511688924 + 43511688925.

It is an arithmetic number, because the mean of its divisors is an integer number (43511688925).

Almost surely, 2^87023377849 is an apocalyptic number.

It is an amenable number.

87023377849 is a deficient number, since it is larger than the sum of its proper divisors (1).

87023377849 is an equidigital number, since it uses as much as digits as its factorization.

87023377849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14224896, while the sum is 58.

The spelling of 87023377849 in words is "eighty-seven billion, twenty-three million, three hundred seventy-seven thousand, eight hundred forty-nine".