87430446137 has 2 divisors, whose sum is σ = 87430446138. Its totient is φ = 87430446136.

The previous prime is 87430446119. The next prime is 87430446223. The reversal of 87430446137 is 73164403478.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78967182121 + 8463264016 = 281011^2 + 91996^2 .

It is a cyclic number.

It is not a de Polignac number, because 87430446137 - 2⁸ = 87430445881 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87430446091 and 87430446100.

It is not a weakly prime, because it can be changed into another prime (87430446637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43715223068 + 43715223069.

It is an arithmetic number, because the mean of its divisors is an integer number (43715223069).

Almost surely, 2^87430446137 is an apocalyptic number.

It is an amenable number.

87430446137 is a deficient number, since it is larger than the sum of its proper divisors (1).

87430446137 is an equidigital number, since it uses as much as digits as its factorization.

87430446137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1354752, while the sum is 47.

The spelling of 87430446137 in words is "eighty-seven billion, four hundred thirty million, four hundred forty-six thousand, one hundred thirty-seven".